| credulousness | (noun) tendency to believe too readily and therefore to be easily deceived | Synonyms: gullibility |
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| decidua | (noun) the epithelial tissue of the endometrium | - |
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| deciduous | (adjective) (of plants and shrubs) shedding foliage at the end of the growing season | - |
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| (adjective) (of teeth, antlers, etc.) being shed at the end of a period of growth | - |
| deduce | (verb) reason by deduction; establish by deduction | Synonyms: deduct, derive, infer |
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| (verb) conclude by reasoning; in logic | Synonyms: infer |
| deducible | (adjective) capable of being deduced | - |
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| deduct | (verb) reason by deduction; establish by deduction | Synonyms: deduce, derive, infer |
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| (verb) make a subtraction | Synonyms: subtract, take off |
| (verb) retain and refrain from disbursing; of payments | Synonyms: recoup, withhold |
| deductible | (adjective) acceptable as a deduction (especially as a tax deduction) | - |
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| (noun) a clause in an insurance policy that relieves the insurer of responsibility to pay the initial loss up to a stated amount | - |
| (noun) (taxes) an amount that can be deducted (especially for the purposes of calculating income tax) | - |
| deduction | (noun) the act of subtracting (removing a part from the whole) | Synonyms: subtraction |
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| (noun) the act of reducing the selling price of merchandise | Synonyms: discount, price reduction |
| (noun) reasoning from the general to the particular (or from cause to effect) | Synonyms: deductive reasoning, synthesis |
| (noun) something that is inferred (deduced or entailed or implied) | Synonyms: entailment, implication |
| (noun) an amount or percentage deducted | Synonyms: discount |
| (noun) a reduction in the gross amount on which a tax is calculated; reduces taxes by the percentage fixed for the taxpayer's income bracket | Synonyms: tax deduction, tax write-off |
| deductive | (adjective) involving inferences from general principles | - |
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| (adjective) relating to logical deduction | - |
| demodulate | (verb) extract information from a modulated carrier wave | - |
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| demodulation | (noun) (electronics) the reception of a signal by extracting it from the carrier wave | - |
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| demodulator | (noun) rectifier that extracts modulation from a radio carrier wave | Synonyms: detector |
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| duad | (noun) two items of the same kind | Synonyms: brace, couple, couplet, distich, duet, duo, dyad, pair, span, twain, twosome, yoke |
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| dual | (adjective) consisting of or involving two parts or components usually in pairs | Synonyms: double, duple |
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| (adjective) a grammatical number category referring to two items or units as opposed to one item (singular) or more than two items (plural) | - |
| (adjective) having more than one decidedly dissimilar aspects or qualities | Synonyms: double, three-fold, threefold, treble, two-fold, twofold |
| dualism | (noun) the doctrine that reality consists of two basic opposing elements, often taken to be mind and matter (or mind and body), or good and evil | - |
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| dualist | (noun) an adherent of dualism | - |
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| dualistic | (adjective) of or relating to the philosophical doctrine of dualism | Synonyms: Manichaean |
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| duality | (noun) (physics) the property of matter and electromagnetic radiation that is characterized by the fact that some properties can be explained best by wave theory and others by particle theory | Synonyms: wave-particle duality |
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| (noun) (geometry) the interchangeability of the roles of points and planes in the theorems of projective geometry | - |
| (noun) being twofold; a classification into two opposed parts or subclasses | Synonyms: dichotomy |
| dub | (noun) the new sounds added by dubbing | - |
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| (verb) give a nickname to | Synonyms: nickname |
| (verb) provide (movies) with a soundtrack of a foreign language | - |
| (verb) raise (someone) to knighthood | Synonyms: knight |
| dubbin | (noun) tallow mixed with oil; used to make leather soft and waterproof | - |
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| dubbing | (noun) a new soundtrack that is added to a film | - |
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| dubiety | (noun) the state of being unsure of something | Synonyms: doubt, doubtfulness, dubiousness, incertitude, uncertainty |
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| dubious | (adjective) open to doubt or suspicion | Synonyms: doubtful, dubitable, in question |
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| (adjective) fraught with uncertainty or doubt | Synonyms: doubtful |
| (adjective) not convinced | - |
| dubiously | (adverb) in a doubtful manner | Synonyms: doubtfully |
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| (adverb) in a questionable and dubious manner | Synonyms: questionably |
| dubiousness | (noun) uncertainty about the truth or factuality or existence of something | Synonyms: doubt, doubtfulness, question |
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| (noun) the state of being unsure of something | Synonyms: doubt, doubtfulness, dubiety, incertitude, uncertainty |
| dubitable | (adjective) open to doubt or suspicion | Synonyms: doubtful, dubious, in question |
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| dubnium | (noun) a transuranic element with atomic number 105 | Synonyms: atomic number 105, Db, element 105, hahnium |
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| dubstep | (noun) A genre of electronic music descended from 2-step garage, characterised by its dark mood, sparse, half-step and two-step rhythms, an average bpm of 140 and an emphasis on sub-bass. | - |
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| ducal | (adjective) of or belonging to or suitable for a duke | - |
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| ducat | (noun) formerly a gold coin of various European countries | - |
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| duce | (noun) leader | - |
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| duchess | (noun) the wife of a duke or a woman holding ducal title in her own right | - |
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| duchy | (noun) the domain controlled by a duke or duchess | Synonyms: dukedom |
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| duck | (noun) small wild or domesticated web-footed broad-billed swimming bird usually having a depressed body and short legs | - |
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| (noun) a heavy cotton fabric of plain weave; used for clothing and tents | - |
| (noun) flesh of a duck (domestic or wild) | - |
| (noun) (cricket) a score of nothing by a batsman | Synonyms: duck's egg |
| (verb) avoid or try to avoid fulfilling, answering, or performing (duties, questions, or issues) | Synonyms: circumvent, dodge, elude, evade, fudge, hedge, parry, put off, sidestep, skirt |
| (verb) to move (the head or body) quickly downwards or away | - |
| (verb) submerge or plunge suddenly | - |
| (verb) dip into a liquid | Synonyms: dip, douse |
| duckbill | (adjective) having a beak resembling that of a duck | Synonyms: duck-billed |
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| (noun) small densely furred aquatic monotreme of Australia and Tasmania having a broad bill and tail and webbed feet; only species in the family Ornithorhynchidae | Synonyms: duck-billed platypus, duckbilled platypus, Ornithorhynchus anatinus, platypus |
| (noun) primitive fish of the Mississippi valley having a long paddle-shaped snout | Synonyms: paddlefish, Polyodon spathula |
| duckboard | (noun) a boardwalk laid across muddy ground | - |
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| ducking | (noun) the act of wetting something by submerging it | Synonyms: dousing, immersion, submersion |
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| (noun) hunting ducks | Synonyms: duck hunting |
| duckling | (noun) young duck | - |
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| (noun) flesh of a young domestic duck | - |
| duckpin | (noun) a bowling pin that is short and squat by comparison with a tenpin | - |
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| duckpins | (noun) a bowling game using a pin smaller than a tenpin but proportionately wider | - |
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| duckweed | (noun) any small or minute aquatic plant of the family Lemnaceae that float on or near the surface of shallow ponds | - |
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| ducky | (noun) a special loved one | Synonyms: darling, dearie, deary, favorite, favourite, pet |
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| duct | (noun) an enclosed conduit for a fluid | - |
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| (noun) a bodily passage or tube lined with epithelial cells and conveying a secretion or other substance | Synonyms: canal, channel, epithelial duct |
| (noun) a continuous tube formed by a row of elongated cells lacking intervening end walls | - |
| ductile | (adjective) capable of being shaped or bent or drawn out | Synonyms: malleable, pliable, pliant, tensile, tractile |
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| (adjective) easily influenced | Synonyms: malleable |
| ductileness | (noun) the malleability of something that can be drawn into threads or wires or hammered into thin sheets | Synonyms: ductility |
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| ductility | (noun) the malleability of something that can be drawn into threads or wires or hammered into thin sheets | Synonyms: ductileness |
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| ductless | (adjective) not having a duct | - |
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| ductule | (noun) a very small duct | Synonyms: ductulus |
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| ductulus | (noun) a very small duct | Synonyms: ductule |
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| dud | (adjective) failing to detonate; especially not charged with an active explosive | - |
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| (noun) an event that fails badly or is totally ineffectual | Synonyms: bomb, turkey |
| (noun) an explosion that fails to occur | Synonyms: misfire |
| (noun) someone who is unsuccessful | Synonyms: flop, washout |
| dude | (noun) a man who is much concerned with his dress and appearance | Synonyms: beau, clotheshorse, dandy, fashion plate, fop, gallant, sheik, swell |
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| (noun) an informal form of address for a man | Synonyms: buster, fellow |
| dudeen | (noun) a clay pipe with a short stem | - |
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| dudgeon | (noun) a feeling of intense indignation (now used only in the phrase `in high dudgeon') | Synonyms: high dudgeon |
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| duds | (noun) informal terms for clothing | Synonyms: threads, togs |
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| due | (adjective) owed and payable immediately or on demand | - |
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| (adjective) suitable to or expected in the circumstances | - |
| (adjective) capable of being assigned or credited to | Synonyms: ascribable, imputable, referable |
| (adjective) scheduled to arrive | - |
| (noun) that which is deserved or owed | - |
| (noun) a payment that is due (e.g., as the price of membership) | - |
| (adverb) directly or exactly; straight | - |
| duel | (noun) a prearranged fight with deadly weapons by two people (accompanied by seconds) in order to settle a quarrel over a point of honor | Synonyms: affaire d'honneur |
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| (noun) any struggle between two skillful opponents (individuals or groups) | - |
| (verb) fight a duel, as over one's honor or a woman | - |
| dueler | (noun) a person who fights duels | Synonyms: duelist, dueller, duellist |
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| duelist | (noun) a person who fights duels | Synonyms: dueler, dueller, duellist |
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| dueller | (noun) a person who fights duels | Synonyms: dueler, duelist, duellist |
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| duellist | (noun) a person who fights duels | Synonyms: dueler, duelist, dueller |
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| duenna | (noun) a woman chaperon | - |
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| duet | (noun) (ballet) a dance for two people (usually a ballerina and a danseur noble) | Synonyms: pas de deux |
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| (noun) a musical composition for two performers | Synonyms: duette, duo |
| (noun) a pair who associate with one another | Synonyms: couple, duo, twosome |
| (noun) two performers or singers who perform together | Synonyms: duette, duo |
| (noun) two items of the same kind | Synonyms: brace, couple, couplet, distich, duad, duo, dyad, pair, span, twain, twosome, yoke |
| duette | (noun) a musical composition for two performers | Synonyms: duet, duo |
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| (noun) two performers or singers who perform together | Synonyms: duet, duo |
| duff | (noun) a stiff flour pudding steamed or boiled usually and containing e.g. currants and raisins and citron | Synonyms: plum duff |
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| duffel | (noun) a coarse heavy woolen fabric | Synonyms: duffle |
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| (noun) a large cylindrical bag of heavy cloth; for carrying personal belongings | Synonyms: duffel bag, duffle, duffle bag |
| duffer | (noun) an incompetent or clumsy person | - |
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| duffle | (noun) a coarse heavy woolen fabric | Synonyms: duffel |
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| (noun) a large cylindrical bag of heavy cloth; for carrying personal belongings | Synonyms: duffel, duffel bag, duffle bag |
| dug | (noun) an udder or breast or teat | - |
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| dugong | (noun) sirenian tusked mammal found from eastern Africa to Australia; the flat tail is bilobate | Synonyms: Dugong dugon |
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| dugout | (noun) a fortification of earth; mostly or entirely below ground | Synonyms: bunker |
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| (noun) either of two low shelters on either side of a baseball diamond where the players and coaches sit during the game | - |
| (noun) a canoe made by hollowing out and shaping a large log | Synonyms: dugout canoe, pirogue |
| (noun) a shelter for humans or domesticated animals and livestock based on a hole or depression dug into the ground; can be fully recessed into the earth, with a flat roof covered by ground, semi-recessed, with a constructed wood or sod roof standing out, or dug into a hillside. | Synonyms: dug-out, pit-house, pithouse |
| duke | (noun) a British peer of the highest rank | - |
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| (noun) a nobleman (in various countries) of high rank | - |
| dukedom | (noun) the domain controlled by a duke or duchess | Synonyms: duchy |
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| (noun) the dignity or rank or position of a duke | - |
| dulcet | (adjective) pleasing to the ear | Synonyms: honeyed, mellifluous, mellisonant, sweet |
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| (adjective) extremely pleasant in a gentle way | - |
| dulciana | (noun) the organ stop having a tone of soft sweet string quality | - |
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| dulcify | (verb) make sweeter in taste | Synonyms: dulcorate, edulcorate, sweeten |
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| dulcimer | (noun) a trapezoidal zither whose metal strings are struck with light hammers | - |
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| (noun) a stringed instrument used in American folk music; an elliptical body and a fretted fingerboard and three strings | - |
| dulcinea | (noun) a woman who is a man's sweetheart | Synonyms: ladylove |
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| dulcorate | (verb) make sweeter in taste | Synonyms: dulcify, edulcorate, sweeten |
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| dull | (adjective) not having a sharp edge or point | - |
|---|
| (adjective) emitting or reflecting very little light | - |
| (adjective) lacking in liveliness or animation | - |
| (adjective) not keenly felt | - |
| (adjective) darkened with overcast | Synonyms: leaden |
| (adjective) (of business) not active or brisk | Synonyms: slow, sluggish |
| (adjective) blunted in responsiveness or sensibility | - |
| (adjective) being or made softer or less loud or clear | Synonyms: muffled, muted, softened |
| (adjective) slow to learn or understand; lacking intellectual acuity | Synonyms: dense, dim, dumb, obtuse, slow |
| (adjective) not clear and resonant; sounding as if striking with or against something relatively soft | Synonyms: thudding |
| (adjective) (of color) very low in saturation; highly diluted | - |
| (adjective) so lacking in interest as to cause mental weariness | Synonyms: boring, deadening, ho-hum, irksome, slow, tedious, tiresome, wearisome |
| (verb) become dull or lusterless in appearance; lose shine or brightness | - |
| (verb) make less lively or vigorous | - |
| (verb) become less interesting or attractive | Synonyms: pall |
| (verb) make dull in appearance | - |
| (verb) make dull or blunt | Synonyms: blunt |
| (verb) deaden (a sound or noise), especially by wrapping | Synonyms: damp, dampen, muffle, mute, tone down |
| (verb) make numb or insensitive | Synonyms: benumb, blunt, numb |
| dullard | (noun) a person who evokes boredom | Synonyms: bore |
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| (noun) a person who is not very bright | Synonyms: dolt, pillock, poor fish, pudden-head, pudding head, stupe, stupid, stupid person |
| dulled | (adjective) deprived of color | Synonyms: greyed |
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| (adjective) made dull or blunt | Synonyms: blunted |
| (adjective) having lost or been caused to lose interest because of overexposure | Synonyms: benumbed |
| dullness | (noun) lack of sensibility | - |
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| (noun) without sharpness or clearness of edge or point | Synonyms: bluntness |
| (noun) the quality of lacking interestingness | - |
| (noun) a lack of visual brightness | - |
| (noun) the quality of being slow to understand | Synonyms: obtuseness |
| dully | (adverb) without liveliness | - |
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| (adverb) without luster or shine | - |
| dulse | (noun) coarse edible red seaweed | Synonyms: Rhodymenia palmata |
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| duly | (adverb) in accordance with what is appropriate or suitable for the circumstances | Synonyms: appropriately, befittingly, fitly, fittingly, properly, suitably |
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| dumb | (adjective) slow to learn or understand; lacking intellectual acuity | Synonyms: dense, dim, dull, obtuse, slow |
|---|
| (adjective) unable to speak because of hereditary deafness | Synonyms: mute, silent |
| (adjective) temporarily incapable of speaking | Synonyms: speechless |
| (adjective) lacking the power of human speech | - |
| dumbass | (noun) a stupid person; these words are used to express a low opinion of someone's intelligence | Synonyms: blockhead, bonehead, dunce, dunderhead, fuckhead, hammerhead, knucklehead, loggerhead, lunkhead, muttonhead, numskull, shithead |
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| dumbbell | (noun) an exercising weight; two spheres connected by a short bar that serves as a handle | - |
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| (noun) an ignorant or foolish person | Synonyms: boob, booby, dope, dummy, pinhead |
| dumbfound | (verb) be a mystery or bewildering to | Synonyms: amaze, baffle, beat, bewilder, flummox, get, gravel, mystify, nonplus, perplex, pose, puzzle, stick, stupefy, vex |
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| dumbfounded | (adjective) as if struck dumb with astonishment and surprise | Synonyms: dumbstricken, dumbstruck, dumfounded, flabbergasted, stupefied, thunderstruck |
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| dumbfounding | (adjective) bewildering or striking dumb with wonder | Synonyms: astounding, dumfounding |
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| dumbly | (adverb) mutely | - |
|---|
| (adverb) stupidly or insensitively | Synonyms: densely, obtusely |
| dumbness | (noun) the quality of being mentally slow and limited | Synonyms: denseness, slow-wittedness |
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| dumbstricken | (adjective) as if struck dumb with astonishment and surprise | Synonyms: dumbfounded, dumbstruck, dumfounded, flabbergasted, stupefied, thunderstruck |
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| dumbstruck | (adjective) as if struck dumb with astonishment and surprise | Synonyms: dumbfounded, dumbstricken, dumfounded, flabbergasted, stupefied, thunderstruck |
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| dumbwaiter | (noun) a small elevator used to convey food (or other goods) from one floor of a building to another | Synonyms: food elevator |
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| dumdum | (noun) a soft-nosed small-arms bullet that expands when it hits a target and causes a gaping wound | Synonyms: dumdum bullet |
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| dumfounded | (adjective) as if struck dumb with astonishment and surprise | Synonyms: dumbfounded, dumbstricken, dumbstruck, flabbergasted, stupefied, thunderstruck |
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| dumfounding | (adjective) bewildering or striking dumb with wonder | Synonyms: astounding, dumbfounding |
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| dummy | (adjective) having the appearance of being real but lacking capacity to function | - |
|---|
| (noun) a figure representing the human form | - |
| (noun) a cartridge containing an explosive charge but no bullet | Synonyms: blank, blank shell |
| (noun) an ignorant or foolish person | Synonyms: boob, booby, dope, dumbbell, pinhead |
| (noun) a person who does not talk | Synonyms: silent person |
| (verb) make a dummy of | Synonyms: dummy up |