| haltere | (noun) either of the rudimentary hind wings of dipterous insects; used for maintaining equilibrium during flight | Synonyms: balancer, halter |
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| hardcore | (adjective) extremely explicit | Synonyms: hard-core |
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| (adjective) intensely loyal | Synonyms: hard-core |
| hardware | (noun) (computer science) the mechanical, magnetic, electronic, and electrical components making up a computer system | Synonyms: computer hardware |
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| (noun) major items of military weaponry (as tanks or missile) | - |
| (noun) instrumentalities (tools or implements) made of metal | Synonyms: ironware |
| hare | (noun) swift timid long-eared mammal larger than a rabbit having a divided upper lip and long hind legs; young born furred and with open eyes | - |
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| (noun) flesh of any of various rabbits or hares (wild or domesticated) eaten as food | Synonyms: rabbit |
| (verb) run quickly, like a hare | - |
| haywire | (adjective) informal or slang terms for mentally irregular | Synonyms: around the bend, balmy, barmy, bats, batty, bonkers, buggy, cracked, crackers, daft, dotty, fruity, kookie, kooky, loco, loony, loopy, nuts, nutty, round the bend, wacky, whacky |
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| (adjective) not functioning properly | Synonyms: amiss, awry, wrong |
| (noun) wire for tying up bales of hay | - |
| healthcare | (noun) the preservation of mental and physical health by preventing or treating illness through services offered by the health profession | Synonyms: health care |
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| hectare | (noun) (abbreviated `ha') a unit of surface area equal to 100 ares (or 10,000 square meters) | - |
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| hectolitre | (noun) a metric unit of volume or capacity equal to 100 liters | Synonyms: hectoliter, hl |
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| hectometre | (noun) a metric unit of length equal to 100 meters | Synonyms: hectometer, hm |
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| heliogravure | (noun) an intaglio print produced by gravure | Synonyms: gravure, photogravure |
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| heliosphere | (noun) the region inside the heliopause containing the sun and solar system | - |
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| hellebore | (noun) any plant of the Eurasian genus Helleborus | - |
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| (noun) perennial herbs of the lily family having thick toxic rhizomes | Synonyms: false hellebore |
| hellfire | (noun) a place of eternal fire envisaged as punishment for the damned | Synonyms: red region |
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| hemisphere | (noun) either half of the cerebrum | Synonyms: cerebral hemisphere |
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| (noun) half of the terrestrial globe | - |
| (noun) half of a sphere | - |
| herbivore | (noun) any animal that feeds chiefly on grass and other plants | - |
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| here | (adjective) being here now | - |
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| (noun) the present location; this place; location, proximal pronoun; demonstrative pronoun, location; quantifier: demonstrative determiner, singular, proximal | - |
| (adverb) in or at this place; where the speaker or writer is | - |
| (adverb) to this place (especially toward the speaker) | Synonyms: hither |
| (adverb) in this circumstance or respect or on this point or detail | - |
| (adverb) at this time; now | - |
| hereinbefore | (adverb) in the preceding part of the current text | - |
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| heretofore | (adverb) used in negative statement to describe a situation that has existed up to this point or up to the present time | Synonyms: as yet, hitherto, so far, thus far, til now, until now, up to now, yet |
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| hire | (noun) the act of hiring something or someone | - |
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| (noun) a newly hired employee | - |
| (verb) engage for service under a term of contract | Synonyms: charter, engage, lease, rent, take |
| (verb) engage or hire for work | Synonyms: employ, engage |
| (verb) hold under a lease or rental agreement; of goods and services | Synonyms: charter, lease, rent |
| holloware | (noun) silverware serving dishes | Synonyms: hollowware |
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| hollowware | (noun) silverware serving dishes | Synonyms: holloware |
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| hombre | (noun) an informal term for a youth or man | Synonyms: bozo, cat, guy, sod |
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| horticulture | (noun) the cultivation of plants | Synonyms: gardening |
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| houhere | (noun) small tree or shrub of New Zealand having a profusion of axillary clusters of honey-scented paper-white flowers and whose bark is used for cordage | Synonyms: Hoheria populnea, lacebark, ribbonwood |
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| huitre | (noun) edible body of any of numerous oysters | Synonyms: oyster |
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| hydrosphere | (noun) the watery layer of the earth's surface; includes water vapor | - |
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| ignore | (verb) be ignorant of or in the dark about | - |
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| (verb) give little or no attention to | Synonyms: disregard, neglect |
| (verb) bar from attention or consideration | Synonyms: brush aside, brush off, discount, dismiss, disregard, push aside |
| (verb) refuse to acknowledge | Synonyms: cut, disregard, snub |
| (verb) fail to notice | - |
| immature | (adjective) not yet mature | - |
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| (adjective) characteristic of a lack of maturity | - |
| (adjective) (used of living things especially persons) in an early period of life or development or growth | Synonyms: young |
| (adjective) (of birds) not yet having developed feathers | Synonyms: unfledged |
| (adjective) not fully developed or mature; not ripe | Synonyms: green, unripe, unripened |
| immure | (verb) lock up or confine, in or as in a jail | Synonyms: gaol, imprison, incarcerate, jail, jug, lag, put away, put behind bars, remand |
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| implore | (verb) call upon in supplication; entreat | Synonyms: beg, pray |
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| imposture | (noun) pretending to be another person | Synonyms: impersonation |
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| impure | (adjective) (used of persons or behaviors) immoral or obscene | - |
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| (adjective) combined with extraneous elements | - |
| (adjective) having a physical or moral blemish so as to make impure according to dietary or ceremonial laws | Synonyms: unclean |
| incisure | (noun) (anatomy) a notch or small hollow | Synonyms: incisura |
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| inclosure | (noun) the act of enclosing something inside something else | Synonyms: enclosing, enclosure, envelopment |
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| (noun) something (usually a supporting document) that is enclosed in an envelope with a covering letter | Synonyms: enclosure |
| incurvature | (noun) a shape that curves or bends inward | Synonyms: concave shape, concavity, incurvation |
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| indenture | (noun) a contract binding one party into the service of another for a specified term | - |
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| (noun) formal agreement between the issuer of bonds and the bondholders as to terms of the debt | - |
| (noun) the space left between the margin and the start of an indented line | Synonyms: indent, indentation, indention |
| (noun) a concave cut into a surface or edge (as in a coastline) | Synonyms: indentation |
| (verb) bind by or as if by indentures, as of an apprentice or servant | Synonyms: indent |
| infrastructure | (noun) the stock of basic facilities and capital equipment needed for the functioning of a country or area | Synonyms: base |
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| (noun) the basic structure or features of a system or organization | Synonyms: substructure |
| inhere | (verb) be inherent in something | - |
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| injure | (verb) cause injuries or bodily harm to | Synonyms: wound |
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| (verb) cause damage or affect negatively | Synonyms: hurt |
| (verb) hurt the feelings of | Synonyms: bruise, hurt, offend, spite, wound |
| inquire | (verb) have a wish or desire to know something | Synonyms: enquire, wonder |
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| (verb) address a question to and expect an answer from | Synonyms: ask, enquire |
| (verb) conduct an inquiry or investigation of | Synonyms: enquire, investigate |
| insectivore | (noun) small insect-eating mainly nocturnal terrestrial or fossorial mammals | - |
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| (noun) any organism that feeds mainly on insects | - |
| insecure | (adjective) lacking self-confidence or assurance | - |
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| (adjective) lacking in security or safety | Synonyms: unsafe |
| (adjective) not firm or firmly fixed; likely to fail or give way | - |
| (adjective) not safe from attack | Synonyms: unsafe |
| inshore | (adjective) (of winds) coming from the sea toward the land | Synonyms: onshore, shoreward |
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| (adjective) close to a shore | - |
| (adverb) toward the shore | - |
| insincere | (adjective) lacking sincerity | - |
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| inspire | (verb) draw in (air) | Synonyms: breathe in, inhale |
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| (verb) fill with revolutionary ideas | Synonyms: revolutionise, revolutionize |
| (verb) serve as the inciting cause of | Synonyms: instigate, prompt |
| (verb) spur on or encourage especially by cheers and shouts | Synonyms: barrack, cheer, exhort, pep up, root on, urge, urge on |
| (verb) supply the inspiration for | - |
| (verb) heighten or intensify | Synonyms: animate, enliven, exalt, invigorate |
| insure | (verb) be careful or certain to do something; make certain of something | Synonyms: ascertain, assure, check, control, ensure, see, see to it |
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| (verb) protect by insurance | Synonyms: cover, underwrite |
| (verb) make certain of | Synonyms: assure, ensure, guarantee, secure |
| (verb) take out insurance for | - |
| interfere | (verb) get involved, so as to alter or hinder an action, or through force or threat of force | Synonyms: interpose, intervene, step in |
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| (verb) come between so as to be hindrance or obstacle | - |
| intermixture | (noun) the act of mixing together | Synonyms: admixture, commixture, mix, mixing, mixture |
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| (noun) an additional ingredient that is added by mixing with the base | Synonyms: admixture |
| (noun) any foodstuff made by combining different ingredients | Synonyms: concoction, mixture |
| inure | (verb) cause to accept or become hardened to; habituate | Synonyms: harden, indurate |
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| investiture | (noun) the ceremonial act of clothing someone in the insignia of an office; the formal promotion of a person to an office or rank | Synonyms: investment |
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| (noun) the ceremony of installing a new monarch | Synonyms: coronation, enthronement, enthronisation, enthronization |
| involucre | (noun) a highly conspicuous bract or bract pair or ring of bracts at the base of an inflorescence | - |
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| ionosphere | (noun) the outer region of the Earth's atmosphere; contains a high concentration of free electrons | - |
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| ire | (noun) belligerence aroused by a real or supposed wrong (personified as one of the deadly sins) | Synonyms: anger, ira, wrath |
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| (noun) a strong emotion; a feeling that is oriented toward some real or supposed grievance | Synonyms: anger, choler |
| ironware | (noun) instrumentalities (tools or implements) made of metal | Synonyms: hardware |
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| isothere | (noun) a line on a map linking places with the same mean summer temperature. | - |
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| jobcentre | (noun) a government office in a town where information about available jobs is displayed and where unemployment benefits are administered | - |
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| jointure | (noun) the act of making or becoming a single unit | Synonyms: conjugation, unification, union, uniting |
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| (noun) (law) an estate secured to a prospective wife as a marriage settlement in lieu of a dower | Synonyms: legal jointure |
| judicature | (noun) the act of meting out justice according to the law | Synonyms: administration |
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| (noun) the position of judge | Synonyms: judgeship |
| (noun) the system of law courts that administer justice and constitute the judicial branch of government | Synonyms: judicatory, judicial system, judiciary |
| (noun) an assembly (including one or more judges) to conduct judicial business | Synonyms: court, tribunal |
| juncture | (noun) an event that occurs at a critical time | Synonyms: occasion |
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| (noun) the shape or manner in which things come together and a connection is made | Synonyms: articulation, join, joint, junction |
| (noun) a crisis situation or point in time when a critical decision must be made | Synonyms: critical point, crossroads |
| kilolitre | (noun) a metric unit of volume or capacity equal to 1000 liters | Synonyms: cubic meter, cubic metre, kiloliter |
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| kilometre | (noun) a metric unit of length equal to 1000 meters (or 0.621371 miles) | Synonyms: kilometer, klick, km |
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| kinetochore | (noun) a specialized condensed region of each chromosome that appears during mitosis where the chromatids are held together to form an X shape | Synonyms: centromere |
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| kitchenware | (noun) hardware utensils for use in a kitchen | - |
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| lacklustre | (adjective) lacking luster or shine | Synonyms: lackluster, lusterless, lustreless |
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| (adjective) lacking brilliance or vitality | Synonyms: lackluster, lusterless, lustreless |
| lacquerware | (noun) a decorative work made of wood and covered with lacquer and often inlaid with ivory or precious metals | - |
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| lakeshore | (noun) the shore of a lake | Synonyms: lakeside |
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| lavaliere | (noun) jeweled pendant worn on a chain around the neck | Synonyms: lavalier, lavalliere |
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| lavalliere | (noun) jeweled pendant worn on a chain around the neck | Synonyms: lavalier, lavaliere |
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| lecture | (noun) teaching by giving a discourse on some subject (typically to a class) | Synonyms: lecturing |
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| (noun) a speech that is open to the public | Synonyms: public lecture, talk |
| (noun) a lengthy rebuke | Synonyms: speech, talking to |
| (verb) censure severely or angrily | Synonyms: bawl out, berate, call down, call on the carpet, chew out, chew up, chide, dress down, have words, jaw, lambast, lambaste, rag, rebuke, remonstrate, reprimand, scold, take to task, trounce |
| (verb) deliver a lecture or talk | Synonyms: talk |
| legionnaire | (noun) a soldier who is a member of a legion (especially the French Foreign Legion) | Synonyms: legionary |
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| legislature | (noun) persons who make or amend or repeal laws | Synonyms: general assembly, law-makers, legislative assembly, legislative body |
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| leisure | (noun) freedom to choose a pastime or enjoyable activity | - |
|---|
| (noun) time available for ease and relaxation | Synonyms: leisure time |
| ligature | (noun) the act of tying or binding things together | Synonyms: tying |
|---|
| (noun) something used to tie or bind | Synonyms: binder |
| (noun) thread used by surgeons to bind a vessel (as to constrict the flow of blood) | - |
| (noun) a metal band used to attach a reed to the mouthpiece of a clarinet or saxophone | - |
| (noun) (music) a group of notes connected by a slur | - |
| (noun) character consisting of two or more letters combined into one | - |
| literature | (noun) the profession or art of a writer | - |
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| (noun) the humanistic study of a body of literature | Synonyms: lit |
| (noun) creative writing of recognized artistic value | - |
| (noun) published writings in a particular style on a particular subject | - |
| lithosphere | (noun) the solid part of the earth consisting of the crust and outer mantle | Synonyms: geosphere |
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| litre | (noun) a metric unit of capacity, formerly defined as the volume of one kilogram of pure water under standard conditions; now equal to 1,000 cubic centimeters (or approximately 1.75 pints) | Synonyms: cubic decimeter, cubic decimetre, l, liter |
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| lore | (noun) knowledge gained through tradition or anecdote | Synonyms: traditional knowledge |
|---|
| louvre | (noun) one of a set of parallel slats in a door or window to admit air and reject rain | Synonyms: fin, louver |
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| lucre | (noun) the excess of revenues over outlays in a given period of time (including depreciation and other non-cash expenses) | Synonyms: earnings, net, net income, net profit, profit, profits |
|---|
| (noun) informal terms for money | Synonyms: boodle, bread, cabbage, clams, dinero, dough, gelt, kale, lettuce, lolly, loot, moolah, pelf, scratch, shekels, simoleons, sugar, wampum |
| luminaire | (noun) an electrical device used to create artificial light by use of an electric lamp; all light fixtures have a fixture body and a light socket to hold the lamp and allow for its replacement | Synonyms: light fitting, light fixture |
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| lure | (noun) something used to lure fish or other animals into danger so they can be trapped or killed | Synonyms: bait, decoy |
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| (noun) qualities that attract by seeming to promise some kind of reward | Synonyms: come-on, enticement |
| (noun) anything that serves as an enticement | Synonyms: bait, come-on, hook, sweetener |
| (verb) provoke someone to do something through (often false or exaggerated) promises or persuasion | Synonyms: entice, tempt |
| lusterware | (noun) pottery with a metallic sheen produced by adding metallic oxides to the glaze | - |
|---|
| lustre | (noun) a surface coating for ceramics or porcelain | Synonyms: luster |
|---|
| (noun) a quality that outshines the usual | Synonyms: brilliancy, luster, splendor, splendour |
| (noun) the visual property of something that shines with reflected light | Synonyms: luster, sheen, shininess |
| lyre | (noun) a harp used by ancient Greeks for accompaniment | - |
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| macabre | (adjective) shockingly repellent; inspiring horror | Synonyms: ghastly, grim, grisly, gruesome, sick |
|---|
| macrospore | (noun) larger of the two types of spore produced in heterosporous plants; develops in ovule into a female gametophyte | Synonyms: megaspore |
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| madrepore | (noun) corals having calcareous skeletons aggregations of which form reefs and islands | Synonyms: madriporian coral, stony coral |
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| magistrature | (noun) the position of magistrate | Synonyms: magistracy |
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| magnetosphere | (noun) the magnetic field of a planet; the volume around the planet in which charged particles are subject more to the planet's magnetic field than to the solar magnetic field | - |
|---|
| maigre | (noun) large European marine food fish | Synonyms: maiger, Sciaena aquila |
|---|
| malware | (noun) malicious software, designed to break into a system | - |
|---|
| manicure | (noun) professional care for the hands and fingernails | - |
|---|
| (verb) care for (one's hand) by cutting and shaping the nails, etc. | - |
| (verb) trim carefully and neatly | - |
| manoeuvre | (noun) a move made to gain a tactical end | Synonyms: maneuver, tactical maneuver, tactical manoeuvre |
|---|
| (noun) an action aimed at evading an opponent | Synonyms: evasive action, maneuver |
| (noun) a military training exercise | Synonyms: maneuver, simulated military operation |
| (noun) a deliberate coordinated movement requiring dexterity and skill | Synonyms: maneuver, play |
| (noun) a plan for attaining a particular goal | Synonyms: maneuver, tactic, tactics |
| (verb) perform a movement in military or naval tactics in order to secure an advantage in attack or defense | Synonyms: maneuver, manoeuver, operate |
| (verb) direct the course; determine the direction of travelling | Synonyms: channelise, channelize, direct, guide, head, maneuver, manoeuver, point, steer |
| (verb) act in order to achieve a certain goal | Synonyms: maneuver, manoeuver |
| manticore | (noun) a mythical monster having the head of man (with horns) and the body of a lion and the tail of a scorpion | Synonyms: mantichora, manticora, mantiger |
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| manufacture | (noun) the organized action of making of goods and services for sale | Synonyms: industry |
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| (noun) the act of making something (a product) from raw materials | Synonyms: fabrication, manufacturing |
| (verb) put together out of artificial or natural components or parts | Synonyms: construct, fabricate |
| (verb) concoct something artificial or untrue | Synonyms: cook up, fabricate, invent, make up |
| (verb) create or produce in a mechanical way | - |
| (verb) produce naturally | - |
| manure | (noun) any animal or plant material used to fertilize land especially animal excreta usually with litter material | - |
|---|
| (verb) spread manure, as for fertilization | Synonyms: muck |
| mare | (noun) female equine animal | Synonyms: female horse |
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| (noun) a dark region of considerable extent on the surface of the moon | Synonyms: maria |
| massacre | (noun) the savage and excessive killing of many people | Synonyms: butchery, carnage, mass murder, slaughter |
|---|
| (verb) kill a large number of people indiscriminately | Synonyms: mow down, slaughter |
| mastigophore | (noun) a usually nonphotosynthetic free-living protozoan with whiplike appendages; some are pathogens of humans and other animals | Synonyms: flagellate, flagellate protozoan, flagellated protozoan, mastigophoran |
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| mature | (adjective) having reached full natural growth or development | - |
|---|
| (adjective) characteristic of maturity | - |
| (adjective) (of birds) having developed feathers or plumage; often used in combination | Synonyms: fledged |
| (adjective) fully developed or matured and ready to be eaten or used | Synonyms: ripe |
| (adjective) fully considered and perfected | Synonyms: matured |
| (verb) cause to ripen and discharge pus | Synonyms: suppurate |
| (verb) develop and reach maturity; undergo maturation | Synonyms: grow, maturate |
| (verb) grow old or older | Synonyms: age, get on, maturate, senesce |
| (verb) become due for repayment | - |
| (verb) cause to ripen or develop fully | Synonyms: ripen |
| (verb) develop and work out fully in one's mind | - |