| acetaldehyde | (noun) a colorless volatile water-soluble liquid aldehyde used chiefly in the manufacture of acetic acid and perfumes and drugs | Synonyms: ethanal |
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| addlehead | (noun) a person with confused ideas; incapable of serious thought | Synonyms: addle-head, birdbrain, loon |
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| aldehyde | (noun) any of a class of highly reactive chemical compounds; used in making resins and dyes and organic acids | - |
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| alehoof | (noun) trailing European aromatic plant of the mint family having rounded leaves and small purplish flowers often grown in hanging baskets; naturalized in North America; sometimes placed in genus Nepeta | Synonyms: field balm, gill-over-the-ground, Glechoma hederaceae, ground ivy, Nepeta hederaceae, runaway robin |
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| alehouse | (noun) a tavern where ale is sold | - |
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| apprehender | (noun) a person who seizes or arrests (especially a person who seizes or arrests in the name of justice) | - |
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| (noun) a person who knows or apprehends | Synonyms: knower |
| apprehension | (noun) the act of apprehending (especially apprehending a criminal) | Synonyms: arrest, catch, collar, pinch, taking into custody |
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| (noun) the cognitive condition of someone who understands | Synonyms: discernment, savvy, understanding |
| (noun) painful expectation | Synonyms: misgiving |
| (noun) fearful expectation or anticipation | Synonyms: apprehensiveness, dread |
| apprehensiveness | (noun) fearful expectation or anticipation | Synonyms: apprehension, dread |
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| arsehole | (noun) vulgar slang for anus | Synonyms: arse, asshole, bunghole |
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| bakehouse | (noun) a workplace where baked goods (breads and cakes and pastries) are produced or sold | Synonyms: bakery, bakeshop |
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| beehive | (noun) a man-made receptacle that houses a swarm of bees | Synonyms: hive |
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| (noun) any workplace where people are very busy | - |
| (noun) a hairdo resembling a beehive | - |
| (noun) a structure that provides a natural habitation for bees; as in a hollow tree | Synonyms: hive |
| behalf | (noun) as the agent of or on someone's part (usually expressed as `on behalf of' rather than `in behalf of') | - |
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| (noun) for someone's benefit (usually expressed as `in behalf' rather than `on behalf' and usually with a possessive) | - |
| behavior | (noun) manner of acting or controlling yourself | Synonyms: behaviour, conduct, doings |
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| (noun) (psychology) the aggregate of the responses or reactions or movements made by an organism in any situation | Synonyms: behaviour |
| (noun) (behavioral attributes) the way a person behaves toward other people | Synonyms: behaviour, conduct, demeanor, demeanour, deportment |
| (noun) the action or reaction of something (as a machine or substance) under specified circumstances | Synonyms: behaviour |
| behaviorism | (noun) an approach to psychology that emphasizes observable measurable behavior | Synonyms: behavioristic psychology, behaviourism, behaviouristic psychology |
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| behaviorist | (noun) a psychologist who subscribes to behaviorism | Synonyms: behaviourist |
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| behaviour | (noun) manner of acting or controlling yourself | Synonyms: behavior, conduct, doings |
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| (noun) (psychology) the aggregate of the responses or reactions or movements made by an organism in any situation | Synonyms: behavior |
| (noun) (behavioral attributes) the way a person behaves toward other people | Synonyms: behavior, conduct, demeanor, demeanour, deportment |
| (noun) the action or reaction of something (as a machine or substance) under specified circumstances | Synonyms: behavior |
| behaviourism | (noun) an approach to psychology that emphasizes observable measurable behavior | Synonyms: behaviorism, behavioristic psychology, behaviouristic psychology |
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| behaviourist | (noun) a psychologist who subscribes to behaviorism | Synonyms: behaviorist |
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| beheading | (noun) killing by cutting off the head | Synonyms: decapitation |
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| (noun) execution by cutting off the victim's head | Synonyms: decapitation |
| behemoth | (noun) someone that is abnormally large and powerful | Synonyms: colossus, giant, goliath, monster |
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| (noun) a person of exceptional importance and reputation | Synonyms: colossus, giant, heavyweight, titan |
| behest | (noun) an authoritative command or request | - |
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| behind | (noun) the fleshy part of the human body that you sit on | Synonyms: arse, ass, backside, bottom, bum, buns, butt, buttocks, can, derriere, fanny, fundament, hind end, hindquarters, keister, nates, posterior, prat, rear, rear end, rump, seat, stern, tail, tail end, tooshie, tush |
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| beholder | (noun) a person who becomes aware (of things or events) through the senses | Synonyms: observer, perceiver, percipient |
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| beholding | (noun) perception by means of the eyes | Synonyms: seeing, visual perception |
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| bluehead | (noun) small Atlantic wrasse the male of which has a brilliant blue head | Synonyms: Thalassoma bifasciatum |
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| bonehead | (noun) a stupid person; these words are used to express a low opinion of someone's intelligence | Synonyms: blockhead, dumbass, dunce, dunderhead, fuckhead, hammerhead, knucklehead, loggerhead, lunkhead, muttonhead, numskull, shithead |
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| bridgehead | (noun) an area in hostile territory that has been captured and is held awaiting further troops and supplies | Synonyms: foothold |
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| (noun) a defensive post at the end of a bridge nearest to the enemy | - |
| bufflehead | (noun) small North American diving duck; males have bushy head plumage | Synonyms: Bucephela albeola, butterball, dipper |
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| cakehole | (noun) informal terms for the mouth | Synonyms: gob, hole, maw, trap, yap |
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| chokehold | (noun) a restraining hold; someone loops the arm around the neck of another person in a tight grip, usually from behind | Synonyms: choke hold |
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| (noun) complete power over a person or situation | Synonyms: stranglehold, throttlehold |
| coffeehouse | (noun) a small restaurant where drinks and snacks are sold | Synonyms: cafe, coffee bar, coffee shop |
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| comprehensibility | (noun) the quality of comprehensible language or thought | Synonyms: understandability |
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| comprehension | (noun) an ability to understand the meaning or importance of something (or the knowledge acquired as a result) | - |
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| (noun) the relation of comprising something | Synonyms: inclusion |
| comprehensive | (noun) an intensive examination testing a student's proficiency in some special field of knowledge | Synonyms: comp, comprehensive examination |
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| comprehensiveness | (noun) the capacity to understand a broad range of topics | Synonyms: breadth, largeness |
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| (noun) completeness over a broad scope | Synonyms: fullness |
| dehiscence | (noun) (biology) release of material by splitting open of an organ or tissue; the natural bursting open at maturity of a fruit or other reproductive body to release seeds or spores or the bursting open of a surgically closed wound | - |
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| dehumanisation | (noun) the act of degrading people with respect to their best qualities | Synonyms: dehumanization |
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| dehumanization | (noun) the act of degrading people with respect to their best qualities | Synonyms: dehumanisation |
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| dehumidifier | (noun) an appliance to extract moisture from the air and make the environment more comfortable | - |
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| dehydration | (noun) the process of extracting moisture | Synonyms: desiccation, drying up, evaporation |
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| (noun) dryness resulting from the removal of water | Synonyms: desiccation |
| (noun) depletion of bodily fluids | - |
| dehydroretinol | (noun) a viscous alcohol that is less active in mammals than is vitamin A1 | Synonyms: vitamin A2 |
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| diehard | (noun) one who adheres to traditional views | Synonyms: traditionalist |
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| doubleheader | (noun) two games instead of one (especially in baseball when the same two teams play two games on the same day) | Synonyms: double feature, twin bill |
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| eyehole | (noun) a small hole (usually round and finished around the edges) in cloth or leather for the passage of a cord or hook or bar | Synonyms: eyelet |
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| (noun) a hole (in a door or an oven etc) through which you can peep | Synonyms: peephole, spyhole |
| falsehood | (noun) the act of rendering something false as by fraudulent changes (of documents or measures etc.) or counterfeiting | Synonyms: falsification |
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| (noun) a false statement | Synonyms: falsity, untruth |
| fiddlehead | (noun) New World fern having woolly cinnamon-colored spore-bearing fronds in early spring later surrounded by green fronds; the early uncurling fronds are edible | Synonyms: cinnamon fern, fiddlehead fern, Osmunda cinnamonea |
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| (noun) tall fern of northern temperate regions having graceful arched fronds and sporophylls resembling ostrich plumes | Synonyms: Matteuccia struthiopteris, Onoclea struthiopteris, ostrich fern, Pteretis struthiopteris, shuttlecock fern |
| figurehead | (noun) figure on the bow of some sailing vessels | - |
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| (noun) a person used as a cover for some questionable activity | Synonyms: front, front man, nominal head, straw man, strawman |
| firehouse | (noun) a station housing fire apparatus and firemen | Synonyms: fire station |
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| foehn | (noun) a warm dry wind that blows down the northern slopes of the Alps | Synonyms: fohn |
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| forehand | (noun) (sports) a return made with the palm of the hand facing the direction of the stroke (as in tennis or badminton or squash) | Synonyms: forehand shot, forehand stroke |
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| forehead | (noun) the part of the face above the eyes | Synonyms: brow |
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| (noun) the large cranial bone forming the front part of the cranium: includes the upper part of the orbits | Synonyms: frontal bone, os frontale |
| formaldehyde | (noun) a colorless poisonous gas; made by the oxidation of methanol | Synonyms: methanal |
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| freehold | (noun) tenure by which land is held in fee simple or for life | - |
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| (noun) an estate held in fee simple or for life | - |
| freeholder | (noun) the owner of a freehold | - |
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| furfuraldehyde | (noun) a liquid aldehyde with a penetrating odor; made from plant hulls and corncobs; used in making furan and as a solvent | Synonyms: furfural |
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| gatehouse | (noun) a house built at a gateway; usually the gatekeeper's residence | - |
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| glyceraldehyde | (noun) a sweet crystalline aldehyde formed by the breakdown of sugars | Synonyms: glyceric aldehyde |
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| hawsehole | (noun) the hole that an anchor rope passes through | Synonyms: hawse, hawsepipe |
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| hedgehog | (noun) small nocturnal Old World mammal covered with both hair and protective spines | Synonyms: Erinaceus europaeus, Erinaceus europeaeus |
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| (noun) relatively large rodents with sharp erectile bristles mingled with the fur | Synonyms: porcupine |
| hobbledehoy | (noun) an awkward bad-mannered adolescent boy | - |
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| horehound | (noun) a candy that is flavored with an extract of the horehound plant | - |
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| (noun) any of various aromatic herbs of the genus Marrubium | - |
| horsehair | (noun) a fabric made from fibers taken from the mane or tail of horses; used for upholstery | - |
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| (noun) hair taken from the mane or tail of a horse | - |
| horsehead | (noun) any of several silvery marine fishes with very flat bodies | Synonyms: Atlantic moonfish, dollarfish, horse-head, horsefish, moonfish, Selene setapinnis |
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| horsehide | (noun) leather from the hide of a horse | - |
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| household | (noun) a social unit living together | Synonyms: family, home, house, menage |
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| householder | (noun) someone who owns a home | Synonyms: homeowner |
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| househusband | (noun) a husband who keeps house while his wife earns the family income | Synonyms: house husband |
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| icehouse | (noun) a house for storing ice | - |
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| incomprehensibility | (noun) the quality of being incomprehensible | - |
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| incomprehension | (noun) an inability to understand | - |
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| jehad | (noun) a holy struggle or striving by a Muslim for a moral or spiritual or political goal | Synonyms: jihad |
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| kaffiyeh | (noun) an Arab headdress consisting of a square piece of cloth folded into a triangle and fastened over the crown by an agal | - |
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| knucklehead | (noun) a stupid person; these words are used to express a low opinion of someone's intelligence | Synonyms: blockhead, bonehead, dumbass, dunce, dunderhead, fuckhead, hammerhead, loggerhead, lunkhead, muttonhead, numskull, shithead |
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| lanseh | (noun) East Indian tart yellow berrylike fruit | Synonyms: lansa, lansat, lanset |
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| leasehold | (noun) land or property held under a lease | - |
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| leaseholder | (noun) a tenant who holds a lease | Synonyms: lessee |
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| meshuggeneh | (noun) (Yiddish) a crazy fool | Synonyms: meshuggener |
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| misapprehension | (noun) an understanding of something that is not correct | Synonyms: mistake, misunderstanding |
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| misbehavior | (noun) improper or wicked or immoral behavior | Synonyms: misbehaviour, misdeed |
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| misbehaviour | (noun) improper or wicked or immoral behavior | Synonyms: misbehavior, misdeed |
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| molehill | (noun) a mound of earth made by moles while burrowing | - |
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| nargileh | (noun) an oriental tobacco pipe with a long flexible tube connected to a container where the smoke is cooled by passing through water | Synonyms: calean, chicha, hookah, hubble-bubble, hubbly-bubbly, kalian, narghile, sheesha, shisha, water pipe |
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| neobehaviorism | (noun) a school of psychology based on the general principles of behaviorism but broader and more flexible in concept. It stresses experimental research and laboratory analyses in the study of overt behavior and in various subjective phenomena that cannot be directly observed and measured, such as fantasies, love, stress, empathy, trust, and personality. | - |
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| officeholder | (noun) the official who holds an office | Synonyms: incumbent |
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| (noun) someone who is appointed or elected to an office and who holds a position of trust | Synonyms: officer |
| okeh | (noun) an endorsement | Synonyms: O.K., OK, okay, okey |
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| pahoehoe | (noun) freely flowing lava | - |
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| paraldehyde | (noun) a colorless liquid (a cyclic trimer of acetaldehyde) that is used as a sedative and a solvent | Synonyms: ethanal trimer |
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| placeholder | (noun) a symbol in a logical or mathematical expression that can be replaced by the name of any member of specified set | - |
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| (noun) a person authorized to act for another | Synonyms: procurator, proxy |
| prehension | (noun) the act of gripping something firmly with the hands (or the tentacles) | Synonyms: grasping, seizing, taking hold |
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| prehensor | (noun) the anterior pair of legs of a centipede that are modified to seize prey and inject venom from the toxicognaths | - |
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| prehistory | (noun) the time during the development of human culture before the appearance of the written word | Synonyms: prehistoric culture |
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| propionaldehyde | (noun) a colorless liquid aldehyde | Synonyms: propanal |
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| racehorse | (noun) a horse bred for racing | Synonyms: bangtail, race horse |
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| rakehell | (noun) a dissolute man in fashionable society | Synonyms: blood, profligate, rake, rip, roue |
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| ravehook | (noun) a hooked hand tool used to prepare the seams of a boat for oakum | - |
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| rehabilitation | (noun) the conversion of wasteland into land suitable for use of habitation or cultivation | Synonyms: reclamation, renewal |
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| (noun) the restoration of someone to a useful place in society | - |
| (noun) the treatment of physical disabilities by massage and electrotherapy and exercises | - |
| (noun) vindication of a person's character and the re-establishment of that person's reputation | - |
| reharmonisation | (noun) a piece of music whose original harmony has been revised | Synonyms: reharmonization |
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| reharmonization | (noun) a piece of music whose original harmony has been revised | Synonyms: reharmonisation |
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| rehash | (noun) old material that is slightly reworked and used again | - |
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| rehearing | (noun) the act of hearing again | Synonyms: relistening |
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