| actinotherapy | (noun) (medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance | Synonyms: irradiation, radiation, radiation therapy, radiotherapy |
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| aether | (noun) a medium that was once supposed to fill all space and to support the propagation of electromagnetic waves | Synonyms: ether |
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| altogether | (noun) informal terms for nakedness | Synonyms: birthday suit, raw |
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| (adverb) with everything included or counted | Synonyms: all told, in all |
| (adverb) with everything considered (and neglecting details) | Synonyms: all in all, on the whole, tout ensemble |
| (adverb) to a complete degree or to the full or entire extent; Completely or entirely | Synonyms: all, completely, entirely, right, totally, whole, wholly |
| another | (adjective) any of various alternatives; some other; entity, singular, other pronoun; quantifier, singular, another | Synonyms: some other |
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| anther | (noun) the part of the stamen that contains pollen; usually borne on a stalk | - |
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| antheral | (adjective) capable of fertilizing female organs | Synonyms: staminate |
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| antheridial | (adjective) relating to or characterized by an antheridium | - |
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| antheridiophore | (noun) gametophore bearing antheridia as in certain mosses and liverworts | - |
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| antheridium | (noun) the male sex organ of spore-producing plants; produces antherozoids; equivalent to the anther in flowers | - |
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| antherozoid | (noun) a motile male gamete of a plant such as an alga or fern or gymnosperm | Synonyms: spermatozoid |
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| aromatherapy | (noun) the therapeutic use of aromatic plant extracts and essential oils in baths or massage | - |
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| atherodyde | (noun) a simple type of jet engine; must be launched at high speed | Synonyms: athodyd, flying drainpipe, ramjet, ramjet engine |
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| atherogenesis | (noun) the formation of atheromas on the walls of the arteries as in atherosclerosis | - |
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| atheroma | (noun) a fatty deposit in the intima (inner lining) of an artery; can obstruct blood flow | - |
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| atheromatic | (adjective) of or relating to or resembling atheroma | Synonyms: atheromatous |
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| atheromatous | (adjective) of or relating to or resembling atheroma | Synonyms: atheromatic |
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| atherosclerosis | (noun) a stage of arteriosclerosis involving fatty deposits (atheromas) inside the arterial walls, thus narrowing the arteries | Synonyms: coronary artery disease |
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| atherosclerotic | (adjective) of or relating to atherosclerosis | - |
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| bather | (noun) a person who travels through the water by swimming | Synonyms: natator, swimmer |
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| (noun) a person who takes a bath | - |
| bellwether | (noun) sheep that leads the herd often wearing a bell | - |
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| (noun) someone who assumes leadership of a movement or activity | - |
| blather | (noun) foolish gibberish | Synonyms: blatherskite |
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| (verb) to talk foolishly | Synonyms: babble, blether, blither, smatter |
| blatherskite | (noun) foolish gibberish | Synonyms: blather |
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| blether | (noun) idle or foolish and irrelevant talk | Synonyms: chin music, idle talk, prate, prattle |
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| (verb) to talk foolishly | Synonyms: babble, blather, blither, smatter |
| blither | (verb) to talk foolishly | Synonyms: babble, blather, blether, smatter |
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| bother | (noun) something or someone that causes trouble; a source of unhappiness | Synonyms: annoyance, botheration, infliction, nuisance, pain, pain in the ass, pain in the neck |
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| (noun) an angry disturbance | Synonyms: fuss, hassle, trouble |
| (verb) cause annoyance in; disturb, especially by minor irritations | Synonyms: annoy, chafe, devil, get at, get to, gravel, irritate, nark, nettle, rag, rile, vex |
| (verb) make confused or perplexed or puzzled | - |
| (verb) make nervous or agitated | - |
| (verb) intrude or enter uninvited | - |
| (verb) take the trouble to do something; concern oneself | Synonyms: inconvenience oneself, trouble, trouble oneself |
| (verb) to cause inconvenience or discomfort to | Synonyms: discommode, disoblige, incommode, inconvenience, put out, trouble |
| botheration | (noun) something or someone that causes trouble; a source of unhappiness | Synonyms: annoyance, bother, infliction, nuisance, pain, pain in the ass, pain in the neck |
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| (noun) the psychological state of being irritated or annoyed | Synonyms: annoyance, irritation, vexation |
| bothered | (adjective) caused to show discomposure | Synonyms: daunted, fazed |
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| bothersome | (adjective) causing irritation or annoyance | Synonyms: annoying, galling, irritating, nettlesome, pesky, pestering, pestiferous, plaguey, plaguy, teasing, vexatious, vexing |
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| breather | (noun) air passage provided by a retractable device containing intake and exhaust pipes; permits a submarine to stay submerged for extended periods of time | Synonyms: schnorchel, schnorkel, snorkel, snorkel breather |
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| (noun) a short respite | Synonyms: breath, breathing place, breathing space, breathing spell, breathing time |
| brother | (noun) a male with the same parents as someone else | Synonyms: blood brother |
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| (noun) a male person who is a fellow member (of a fraternity or religion or other group) | - |
| (noun) a close friend who accompanies his buddies in their activities | Synonyms: buddy, chum, crony, pal, sidekick |
| (noun) used as a term of address for those male persons engaged in the same movement | Synonyms: comrade |
| brotherhood | (noun) the feeling that men should treat one another like brothers | - |
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| (noun) people engaged in a particular occupation | Synonyms: fraternity, sodality |
| (noun) an organization of employees formed to bargain with the employer | Synonyms: labor union, trade union, trades union, union |
| (noun) the kinship relation between a male offspring and the siblings | - |
| brotherlike | (adjective) like or characteristic of or befitting a brother | Synonyms: brotherly, fraternal |
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| brotherly | (adjective) like or characteristic of or befitting a brother | Synonyms: brotherlike, fraternal |
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| (adverb) (archaic as adverb) in a manner characteristic of a brother | - |
| chemotherapeutic | (adjective) of or relating to chemotherapy | Synonyms: chemotherapeutical |
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| chemotherapeutical | (adjective) of or relating to chemotherapy | Synonyms: chemotherapeutic |
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| chemotherapy | (noun) the use of chemical agents to treat or control disease (or mental illness) | - |
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| chrysotherapy | (noun) the use of chemicals containing gold for treating diseases (such as rheumatoid arthritis) | - |
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| cither | (noun) a musical stringed instrument with strings stretched over a flat sounding board; it is laid flat and played with a plectrum and with fingers | Synonyms: zither, zithern |
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| (noun) a 16th century musical instrument resembling a guitar with a pear-shaped soundbox and wire strings | Synonyms: cithern, citole, cittern, gittern |
| cithern | (noun) a 16th century musical instrument resembling a guitar with a pear-shaped soundbox and wire strings | Synonyms: cither, citole, cittern, gittern |
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| diathermy | (noun) a method of physical therapy that involves generating local heat in body tissues by high-frequency electromagnetic currents | - |
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| diphtheria | (noun) acute contagious infection caused by the bacterium Corynebacterium diphtheriae; marked by the formation of a false membrane in the throat and other air passages causing difficulty in breathing | - |
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| dither | (noun) an excited state of agitation | Synonyms: flap, fuss, pother, tizzy |
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| (verb) make a fuss; be agitated | Synonyms: flap, pother |
| (verb) act nervously; be undecided; be uncertain | - |
| dithering | (noun) the process of representing intermediate colors by patterns of tiny colored dots that simulate the desired color | - |
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| druthers | (noun) the right or chance to choose | Synonyms: preference |
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| ectotherm | (noun) an animal whose body temperature varies with the temperature of its surroundings; any animal except birds and mammals | Synonyms: poikilotherm |
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| ectothermic | (adjective) of animals except birds and mammals; having body temperature that varies with the environment | Synonyms: heterothermic, poikilothermic, poikilothermous |
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| either | (adverb) after a negative statement used as an intensive meaning something like `likewise' or `also' | - |
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| electrotherapist | (noun) someone who specializes in the treatment of disease by electricity | - |
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| electrotherapy | (noun) the therapeutic application of electricity to the body (as in the treatment of various forms of paralysis) | Synonyms: electric healing, electrical healing, galvanism |
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| endothermal | (adjective) (of a chemical reaction or compound) occurring or formed with absorption of heat | Synonyms: endothermic, heat-absorbing |
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| endothermic | (adjective) (of a chemical reaction or compound) occurring or formed with absorption of heat | Synonyms: endothermal, heat-absorbing |
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| ether | (noun) a colorless volatile highly flammable liquid formerly used as an inhalation anesthetic | Synonyms: diethyl ether, divinyl ether, ethoxyethane, ethyl ether, vinyl ether |
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| (noun) a medium that was once supposed to fill all space and to support the propagation of electromagnetic waves | Synonyms: aether |
| (noun) any of a class of organic compounds that have two hydrocarbon groups linked by an oxygen atom | - |
| (noun) the fifth and highest element after air and earth and fire and water; was believed to be the substance composing all heavenly bodies | Synonyms: quintessence |
| ethereal | (adjective) of or containing or dissolved in ether | - |
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| (adjective) characterized by unusual lightness and delicacy | Synonyms: gossamer |
| (adjective) of heaven or the spirit | Synonyms: celestial, supernal |
| (adjective) characterized by lightness and insubstantiality; as impalpable or intangible as air | Synonyms: aerial, aeriform, aery, airy |
| etherealize | (verb) make ethereal | Synonyms: etherialise |
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| etherialise | (verb) make ethereal | Synonyms: etherealize |
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| etherify | (verb) change into an ether | - |
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| etherise | (verb) anesthetize with ether | Synonyms: etherize |
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| etherize | (verb) anesthetize with ether | Synonyms: etherise |
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| ethernet | (noun) a type of network technology for local area networks; coaxial cable carries radio frequency signals between computers at a rate of 10 megabits per second | - |
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| eutherian | (adjective) of or relating to or belonging to the subclass Eutheria | - |
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| (noun) mammals having a placenta; all mammals except monotremes and marsupials | Synonyms: eutherian mammal, placental, placental mammal |
| exotherm | (noun) a compound that gives off heat during its formation and absorbs heat during its decomposition | - |
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| exothermal | (adjective) (of a chemical reaction or compound) occurring or formed with the liberation of heat | Synonyms: exothermic, heat-releasing |
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| exothermic | (adjective) (of a chemical reaction or compound) occurring or formed with the liberation of heat | Synonyms: exothermal, heat-releasing |
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| farther | (adjective) more distant in especially space or time | - |
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| (adjective) more distant in especially degree | Synonyms: further |
| (adverb) to or at a greater distance in time or space (`farther' is used more frequently than `further' in this physical sense) | Synonyms: further |
| (adverb) to or at a greater extent or degree or a more advanced stage (`further' is used more often than `farther' in this abstract sense) | Synonyms: further |
| farthermost | (adjective) (comparatives of `far') most remote in space or time or order | Synonyms: farthest, furthermost, furthest, utmost, uttermost |
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| father | (noun) a male parent (also used as a term of address to your father) | Synonyms: begetter, male parent |
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| (noun) the founder of a family | Synonyms: forefather, sire |
| (noun) a person who holds an important or distinguished position in some organization | - |
| (noun) a person who founds or establishes some institution | Synonyms: beginner, founder, founding father |
| (noun) the head of an organized crime family | Synonyms: don |
| (verb) make (offspring) by reproduction | Synonyms: beget, bring forth, engender, generate, get, mother, sire |
| fatherhood | (noun) the status of a father | - |
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| (noun) the status of a religious leader | - |
| (noun) the kinship relation between an offspring and the father | Synonyms: paternity |
| fatherland | (noun) the country where you were born | Synonyms: country of origin, homeland, mother country, motherland, native land |
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| fatherless | (adjective) not having a known or legally responsible father | - |
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| (adjective) having no living father | - |
| fatherlike | (adjective) like or befitting a father or fatherhood; kind and protective | Synonyms: fatherly |
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| fatherliness | (noun) the benignity and protectiveness of or befitting a father | Synonyms: paternal quality |
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| fatherly | (adjective) like or befitting a father or fatherhood; kind and protective | Synonyms: fatherlike |
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| feather | (noun) turning an oar parallel to the water between pulls | Synonyms: feathering |
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| (noun) branching, hair-like structure that grows on the bodies of birds | - |
| (verb) grow feathers | Synonyms: fledge |
| (verb) turn the oar, while rowing | Synonyms: square |
| (verb) turn the paddle; in canoeing | Synonyms: square |
| (verb) cover or fit with feathers | - |
| (verb) join tongue and groove, in carpentry | - |
| featherbed | (noun) a mattress stuffed with feathers | Synonyms: feather bed |
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| (verb) hire more workers than are necessary | - |
| (verb) treat with excessive indulgence | Synonyms: baby, cocker, coddle, cosset, indulge, mollycoddle, pamper, spoil |
| featherbedding | (noun) the practice (usually by a labor union) of requiring an employer to hire more workers than are required | - |
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| featherbrained | (adjective) lacking seriousness; given to frivolity | Synonyms: airheaded, dizzy, empty-headed, giddy, light-headed, lightheaded, silly |
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| feathered | (adjective) having or covered with feathers | - |
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| (adjective) adorned with feathers or plumes | Synonyms: feathery, plumy |
| featheredge | (noun) a thin tapering edge | - |
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| featheredged | (adjective) having a rough edge; used of handmade paper or paper resembling handmade | Synonyms: deckle-edged, deckled |
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| featherfoil | (noun) a plant of the genus Hottonia | Synonyms: feather-foil |
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| featheriness | (noun) a light softness | Synonyms: downiness, fluffiness |
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| feathering | (noun) turning an oar parallel to the water between pulls | Synonyms: feather |
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| featherless | (adjective) having no feathers | Synonyms: unfeathered |
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| featherlike | (adjective) resembling or suggesting a feather or feathers | Synonyms: feathery |
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| feathertop | (noun) northeastern tropical African plant having feathery panicles | Synonyms: feathertop grass, Pennistum villosum |
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| (noun) a variety of reed grass | Synonyms: Calamagrostis acutiflora, feather reed grass |
| featherweight | (noun) A weight class division in combat sports, for fighters heavier than those in the bantamweight division and lighter than those in the lightweight division. | - |
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| (noun) a professional boxer who weighs between 123 and 126 pounds | - |
| (noun) weighs 126-139 pounds | - |
| (noun) an amateur boxer who weighs no more than 126 pounds | - |
| feathery | (adjective) adorned with feathers or plumes | Synonyms: feathered, plumy |
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| (adjective) characterized by a covering of feathers | - |
| (adjective) resembling or suggesting a feather or feathers | Synonyms: featherlike |
| forefather | (noun) the founder of a family | Synonyms: father, sire |
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| (noun) person from an earlier time who contributed to the tradition shared by some group | - |
| foregather | (verb) collect in one place | Synonyms: assemble, forgather, gather, meet |
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| foremother | (noun) a female ancestor | - |
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| forgather | (verb) collect in one place | Synonyms: assemble, foregather, gather, meet |
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| fothergilla | (noun) any of several deciduous low-growing shrubs of the genus Fothergilla having showy brushlike spikes of white flowers in spring and fiery red and orange autumn color; grows from Alabama to the Allegheny Mountains | Synonyms: witch alder |
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| further | (adjective) more distant in especially degree | Synonyms: farther |
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| (adverb) to or at a greater distance in time or space (`farther' is used more frequently than `further' in this physical sense) | Synonyms: farther |
| (adverb) to or at a greater extent or degree or a more advanced stage (`further' is used more often than `farther' in this abstract sense) | Synonyms: farther |
| (adverb) in addition or furthermore | - |
| (verb) contribute to the progress or growth of | Synonyms: advance, boost, encourage, promote |
| (verb) promote the growth of | Synonyms: cultivate, foster |
| furtherance | (noun) the advancement of some enterprise | Synonyms: forwarding, promotion |
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| (noun) encouragement of the progress or growth or acceptance of something | Synonyms: advancement, promotion |
| furthermore | (adverb) denoting additional information | Synonyms: in addition, moreover, what is more |
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| furthermost | (adjective) (comparatives of `far') most remote in space or time or order | Synonyms: farthermost, farthest, furthest, utmost, uttermost |
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| gather | (noun) the act of gathering something | Synonyms: gathering |
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| (noun) sewing consisting of small folds or puckers made by pulling tight a thread in a line of stitching | Synonyms: gathering |
| (verb) increase in amount by collecting or gathering | Synonyms: accumulate, amass, conglomerate, cumulate, pile up |
| (verb) increase or develop | Synonyms: gain |
| (verb) conclude from evidence | - |
| (verb) assemble or get together | Synonyms: collect, garner, pull together |
| (verb) draw together into folds or puckers | Synonyms: pucker, tuck |
| (verb) look for (food) in nature | - |
| (verb) draw and bring closer | - |
| (verb) collect in one place | Synonyms: assemble, foregather, forgather, meet |
| (verb) get people together | Synonyms: assemble, get together |
| gathered | (adjective) brought together in one place | Synonyms: collected |
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| gatherer | (noun) a person who is employed to collect payments (as for rent or taxes) | Synonyms: accumulator, collector |
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| (noun) a person who gathers | - |
| gathering | (noun) the social act of assembling | Synonyms: assemblage, assembly |
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| (noun) the act of gathering something | Synonyms: gather |
| (noun) sewing consisting of small folds or puckers made by pulling tight a thread in a line of stitching | Synonyms: gather |
| (noun) a group of persons together in one place | Synonyms: assemblage |