| initialise | (verb) divide (a disk) into marked sectors so that it may store data | Synonyms: format, initialize |
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| (verb) assign an initial value to a computer program | Synonyms: initialize |
| innocense | (noun) white and lavender to pale-blue flowers grow in perfect rings of widely spaced bands around the stems forming a kind of pagoda; California | Synonyms: Collinsia bicolor, Collinsia heterophylla, purple chinese houses |
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| institutionalise | (verb) cause to be admitted; of persons to an institution | Synonyms: charge, commit, institutionalize, send |
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| intense | (adjective) possessing or displaying a distinctive feature to a heightened degree | - |
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| (adjective) (of color) having the highest saturation | Synonyms: vivid |
| (adjective) extremely sharp or severe | Synonyms: acute |
| intercourse | (noun) sexual activity between individuals, especially the insertion of a man's penis into a woman's vagina until orgasm and ejaculation occur | Synonyms: carnal knowledge, coition, coitus, copulation, relation, sex act, sexual congress, sexual intercourse, sexual relation |
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| (noun) communication between individuals | Synonyms: social intercourse |
| interiorise | (verb) incorporate within oneself; make subjective or personal | Synonyms: interiorize, internalise, internalize |
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| internalise | (verb) incorporate within oneself; make subjective or personal | Synonyms: interiorise, interiorize, internalize |
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| internationalise | (verb) make international in character | Synonyms: internationalize |
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| (verb) put under international control | Synonyms: internationalize |
| interpose | (verb) to insert between other elements | Synonyms: come in, inject, interject, put in, throw in |
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| (verb) to put forth by way of intervention | - |
| (verb) be or come between | - |
| (verb) get involved, so as to alter or hinder an action, or through force or threat of force | Synonyms: interfere, intervene, step in |
| intersperse | (verb) introduce one's writing or speech with certain expressions | Synonyms: interlard |
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| (verb) place at intervals in or among | - |
| intransitivise | (verb) intransitivize | Synonyms: detransitivise, detransitivize, intransitivize |
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| inverse | (adjective) opposite in nature or effect or relation to another quantity | - |
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| (adjective) reversed (turned backward) in order or nature or effect | Synonyms: reverse |
| (noun) something inverted in sequence or character or effect | Synonyms: opposite |
| invertase | (noun) an enzyme that catalyzes the hydrolysis of sucrose into glucose and fructose | Synonyms: saccharase, sucrase |
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| iodise | (verb) treat with iodine so as to prevent infection | Synonyms: iodize |
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| (verb) treat with iodine | Synonyms: iodize |
| ionise | (verb) convert into ions | Synonyms: ionize |
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| (verb) become converted into ions | Synonyms: ionize |
| isobase | (noun) a line drawn on a map or chart connecting places of equal or constant land upheaval. | - |
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| isomerase | (noun) an enzyme that catalyzes its substrate to an isomeric form | - |
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| isomerise | (verb) change into an isomer | Synonyms: isomerize |
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| (verb) cause to change into an isomer | Synonyms: isomerize |
| italicise | (verb) print in italics | Synonyms: italicize |
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| itemise | (verb) specify individually | Synonyms: enumerate, itemize, recite |
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| (verb) place on a list of items | Synonyms: itemize |
| jailhouse | (noun) a correctional institution used to detain persons who are in the lawful custody of the government (either accused persons awaiting trial or convicted persons serving a sentence) | Synonyms: clink, gaol, jail, pokey, poky, slammer |
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| jeopardise | (verb) pose a threat to; present a danger to | Synonyms: endanger, imperil, jeopardize, menace, peril, threaten |
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| jocose | (adjective) characterized by jokes and good humor | Synonyms: jesting, jocular, joking |
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| journalese | (noun) the style in which newspapers are written | - |
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| juxtapose | (verb) place side by side | - |
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| keratinise | (verb) become horny and impregnated with keratin | Synonyms: keratinize |
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| (verb) convert into keratin | Synonyms: keratinize |
| ketoheptose | (noun) A seven-carbon sugar possessing a ketone group. | - |
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| ketohexose | (noun) a monosaccharide having six carbon atoms and a ketone group | - |
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| ketose | (noun) any monosaccharide sugar that contains a ketone group or its hemiacetal | - |
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| ketotetrose | (noun) A monosaccharide that has both a ketone and four carbons. | - |
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| ketotriose | (noun) Any ketose having three carbon atoms; in reality, only dihydroxyacetone. | - |
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| kinase | (noun) an enzyme that catalyzes the conversion of a proenzyme to an active enzyme | - |
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| labialise | (verb) pronounce with rounded lips | Synonyms: labialize, round |
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| lachrymose | (adjective) showing sorrow | Synonyms: dolorous, dolourous, tearful, weeping |
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| lacrosse | (noun) a game invented by American Indians; now played by two teams who use long-handled rackets to catch and carry and throw the ball toward the opponents' goal | - |
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| lactase | (noun) any of a group of enzymes (trade name Lactaid) that hydrolyze lactose to glucose and galactose | Synonyms: Lactaid |
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| lactose | (noun) a sugar comprising one glucose molecule linked to a galactose molecule; occurs only in milk | Synonyms: milk sugar |
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| laevulose | (noun) a simple sugar found in honey and in many ripe fruits | Synonyms: fructose, fruit sugar, levulose |
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| laicise | (verb) reduce to lay status | Synonyms: laicize |
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| lamphouse | (noun) housing that holds a lamp (as in a movie projector) | Synonyms: lamp house, lamp housing |
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| lapse | (noun) a mistake resulting from inattention | Synonyms: oversight |
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| (noun) a failure to maintain a higher state | Synonyms: backsliding, lapsing, relapse, relapsing, reversion, reverting |
| (noun) a break or intermission in the occurrence of something | - |
| (verb) go back to bad behavior | Synonyms: fall back, recidivate, regress, relapse, retrogress |
| (verb) drop to a lower level, as in one's morals or standards | Synonyms: backslide |
| (verb) end, at least for a long time | - |
| (verb) for time to move forward | Synonyms: elapse, glide by, go along, go by, pass, slide by, slip away, slip by |
| (verb) pass into a specified state or condition; sink into | Synonyms: pass, sink |
| (verb) let slip | - |
| largesse | (noun) liberality in bestowing gifts; extremely liberal and generous of spirit | Synonyms: largess, magnanimity, munificence, openhandedness |
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| (noun) a gift or money given (as for service or out of benevolence); usually given ostentatiously | Synonyms: largess |
| latinise | (verb) cause to adopt Catholicism | Synonyms: catholicise, catholicize, latinize |
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| lease | (noun) a contract granting use or occupation of property during a specified time for a specified payment | - |
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| (noun) property that is leased or rented out or let | Synonyms: letting, rental |
| (noun) the period of time during which a contract conveying property to a person is in effect | Synonyms: term of a contract |
| (verb) engage for service under a term of contract | Synonyms: charter, engage, hire, rent, take |
| (verb) grant use or occupation of under a term of contract | Synonyms: let, rent |
| (verb) let for money | Synonyms: rent |
| (verb) hold under a lease or rental agreement; of goods and services | Synonyms: charter, hire, rent |
| leastwise | (adverb) if nothing else (`leastwise' is informal and `leastways' is colloquial) | Synonyms: at any rate, at least, leastways |
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| legalese | (noun) a style that uses the abstruse technical vocabulary of the law | - |
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| legalise | (verb) make legal | Synonyms: decriminalise, decriminalize, legalize, legitimate, legitimatise, legitimatize, legitimise, legitimize |
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| legitimatise | (verb) make legal | Synonyms: decriminalise, decriminalize, legalise, legalize, legitimate, legitimatize, legitimise, legitimize |
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| legitimise | (verb) make legal | Synonyms: decriminalise, decriminalize, legalise, legalize, legitimate, legitimatise, legitimatize, legitimize |
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| lengthwise | (adjective) running or extending in the direction of the length of a thing | Synonyms: lengthways |
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| (adverb) in the direction of the length | Synonyms: lengthways, longitudinally, longways, longwise |
| lense | (noun) a transparent optical device used to converge or diverge transmitted light and to form images | Synonyms: lens, lens system |
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| lentiginose | (adjective) relating to or covered with or resembling freckles | Synonyms: freckled, lentiginous |
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| leprose | (adjective) rough to the touch; covered with scales or scurf | Synonyms: lepidote, scabrous, scaly, scurfy |
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| levulose | (noun) a simple sugar found in honey and in many ripe fruits | Synonyms: fructose, fruit sugar, laevulose |
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| lexicalise | (verb) make or coin into a word or accept a new word into the lexicon of a language | Synonyms: lexicalize |
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| liaise | (verb) act between parties with a view to reconciling differences | Synonyms: arbitrate, intercede, intermediate, mediate |
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| liberalise | (verb) make liberal or more liberal, of laws and rules | Synonyms: liberalize |
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| (verb) become more liberal | Synonyms: liberalize |
| license | (noun) the act of giving a formal (usually written) authorization | Synonyms: permission, permit |
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| (noun) a legal document giving official permission to do something | Synonyms: licence, permit |
| (noun) freedom to deviate deliberately from normally applicable rules or practices (especially in behavior or speech) | Synonyms: licence |
| (noun) excessive freedom; lack of due restraint | Synonyms: licence |
| (verb) authorize officially | Synonyms: certify, licence |
| lighthouse | (noun) a tower with a light that gives warning of shoals to passing ships | Synonyms: beacon, beacon light, pharos |
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| likewise | (adverb) in like or similar manner | Synonyms: similarly |
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| (adverb) in addition | Synonyms: also, as well, besides, too |
| (adverb) equally | Synonyms: alike |
| linearise | (verb) make linear or get into a linear form | Synonyms: linearize |
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| lionise | (verb) assign great social importance to | Synonyms: celebrate, lionize |
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| lipase | (noun) an enzyme secreted in the digestive tract that catalyzes the breakdown of fats into individual fatty acids that can be absorbed into the bloodstream | - |
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| liquidise | (verb) make (a solid substance) liquid, as by heating | Synonyms: liquefy, liquidize, liquify |
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| literalise | (verb) make literal | Synonyms: literalize |
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| lobscouse | (noun) a stew of meat and vegetables and hardtack that is eaten by sailors | Synonyms: lobscuse, scouse |
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| lobscuse | (noun) a stew of meat and vegetables and hardtack that is eaten by sailors | Synonyms: lobscouse, scouse |
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| localise | (verb) locate | Synonyms: localize, place, set |
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| (verb) restrict something to a particular area | Synonyms: localize |
| (verb) concentrate on a particular place or spot | Synonyms: focalise, focalize, localize |
| (verb) identify the location or place of | Synonyms: localize, place |
| longwise | (adverb) in the direction of the length | Synonyms: lengthways, lengthwise, longitudinally, longways |
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| loose | (adjective) not tight; not closely constrained or constricted or constricting | - |
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| (adjective) not compact or dense in structure or arrangement | - |
| (adjective) not affixed | Synonyms: unaffixed |
| (adjective) (of textures) full of small openings or gaps | Synonyms: open |
| (adjective) not literal | Synonyms: free, liberal |
| (adjective) lacking a sense of restraint or responsibility | Synonyms: idle |
| (adjective) not tense or taut | Synonyms: slack |
| (adjective) casual and unrestrained in sexual behavior | Synonyms: easy, light, promiscuous, sluttish, wanton |
| (adjective) emptying easily or excessively | Synonyms: lax |
| (adjective) (of a ball in sport) not in the possession or control of any player | - |
| (adjective) not officially recognized or controlled | Synonyms: informal |
| (adjective) not carefully arranged in a package | - |
| (adjective) having escaped, especially from confinement | Synonyms: at large, escaped, on the loose |
| (adverb) without restraint | Synonyms: free |
| (verb) become loose or looser or less tight | Synonyms: loosen, relax |
| (verb) make loose or looser | Synonyms: loosen |
| (verb) turn loose or free from restraint | Synonyms: let loose, unleash |
| (verb) grant freedom to; free from confinement | Synonyms: free, liberate, release, unloose, unloosen |
| lose | (verb) be set at a disadvantage | Synonyms: suffer |
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| (verb) withdraw, as from reality | - |
| (verb) fail to win | - |
| (verb) suffer the loss of a person through death or removal | - |
| (verb) allow to go out of sight or mind | - |
| (verb) fail to perceive or to catch with the senses or the mind | Synonyms: miss |
| (verb) fail to get or obtain | - |
| (verb) miss from one's possessions; lose sight of | - |
| (verb) fail to keep or to maintain; cease to have, either physically or in an abstract sense | - |
| (verb) fail to make money in a business; make a loss or fail to profit | Synonyms: turn a loss |
| louse | (noun) wingless usually flattened bloodsucking insect parasitic on warm-blooded animals | Synonyms: sucking louse |
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| (noun) any of several small insects especially aphids that feed by sucking the juices from plants | Synonyms: plant louse |
| (noun) wingless insect with mouth parts adapted for biting; mostly parasitic on birds | Synonyms: bird louse, biting louse |
| (noun) a person who has a nasty or unethical character undeserving of respect | Synonyms: dirt ball, insect, worm |
| lowercase | (adjective) relating to small (not capitalized) letters that were kept in the lower half of a compositor's type case | - |
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| (noun) the characters that were once kept in bottom half of a compositor's type case | Synonyms: lower-case letter, minuscule, small letter |
| lyonnaise | (adjective) cooked with onions | - |
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| lyophilise | (verb) to dry (blood, serum, or tissue) by freezing in a high vacuum | Synonyms: lyophilize |
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| macadamise | (verb) surface with macadam | Synonyms: macadam, macadamize, tarmac |
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| madhouse | (noun) pejorative terms for an insane asylum | Synonyms: Bedlam, booby hatch, crazy house, cuckoo's nest, funny farm, funny house, loony bin, nut house, nuthouse, sanatorium, snake pit |
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| magnetise | (verb) make magnetic | Synonyms: magnetize |
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| (verb) attract strongly, as if with a magnet | Synonyms: bewitch, magnetize, mesmerise, mesmerize, spellbind |
| malaise | (noun) physical discomfort (as mild sickness or depression) | Synonyms: unease, uneasiness |
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| maltose | (noun) a white crystalline sugar formed during the digestion of starches | Synonyms: malt sugar |
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| manganese | (noun) a hard brittle grey polyvalent metallic element that resembles iron but is not magnetic; used in making steel; occurs in many minerals | Synonyms: atomic number 25, Mn |
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| manse | (noun) the residence of a clergyman (especially a Presbyterian clergyman) | - |
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| (noun) a large and imposing house | Synonyms: hall, mansion, mansion house, residence |
| marbleise | (verb) make something look like marble | Synonyms: marbleize |
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| marginalise | (verb) relegate to a lower or outer edge, as of specific groups of people | Synonyms: marginalize |
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| marquise | (noun) permanent canopy over an entrance of a hotel etc. | Synonyms: marquee |
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| (noun) a noblewoman ranking below a duchess and above a countess | Synonyms: marchioness |
| martyrise | (verb) torture and torment like a martyr | Synonyms: martyr, martyrize |
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| masculinise | (verb) produce virilism in or cause to assume masculine characteristics, as through a hormonal imbalance or hormone therapy | Synonyms: masculinize, virilise, virilize |
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| masse | (noun) a shot in billiards made by hitting the cue ball with the cue held nearly vertically; the cue ball spins around another ball before hitting the object ball | Synonyms: masse shot |
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| masseuse | (noun) a female massager | - |
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| materialise | (verb) come into being; become reality | Synonyms: happen, materialize |
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| maximise | (verb) make as big or large as possible | Synonyms: maximize |
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| (verb) make the most of | Synonyms: maximize |
| mayonnaise | (noun) egg yolks and oil and vinegar | Synonyms: mayo |
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| mechanise | (verb) make mechanical | Synonyms: mechanize |
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| (verb) make monotonous; make automatic or routine | Synonyms: mechanize |
| (verb) equip with armed and armored motor vehicles | Synonyms: mechanize, motorise, motorize |
| meetinghouse | (noun) a building for religious assembly (especially Nonconformists, e.g., Quakers) | Synonyms: conventicle |
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| megadose | (noun) an exceptionally large dose, as of a drug or vitamin. | - |
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| melanise | (verb) make or become black | Synonyms: black, blacken, melanize |
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| (verb) convert into, or infiltrate with melanin | Synonyms: melanize |
| melodise | (verb) supply a melody for | Synonyms: melodize |
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| memorialise | (verb) be or provide a memorial to a person or an event | Synonyms: commemorate, immortalise, immortalize, memorialize |
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| (verb) address in a memorial | Synonyms: memorialize |
| memorise | (verb) commit to memory; learn by heart | Synonyms: con, learn, memorize |
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| menopause | (noun) the time in a woman's life in which the menstrual cycle ends | Synonyms: change of life, climacteric |
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