| crucial | (adjective) of extreme importance; vital to the resolution of a crisis | Synonyms: important |
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| (adjective) of the greatest importance | Synonyms: all-important, all important, essential, of the essence |
| (adjective) having crucial relevance | - |
| cruciality | (noun) a state of critical urgency | Synonyms: criticality, criticalness |
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| crucially | (adverb) to a crucial degree | - |
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| cruciate | (adjective) shaped like a cross | Synonyms: cruciform |
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| crucible | (noun) a vessel made of material that does not melt easily; used for high temperature chemical reactions | Synonyms: melting pot |
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| crucifer | (noun) any of various plants of the family Cruciferae | Synonyms: cruciferous plant |
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| cruciferous | (adjective) of or relating to or belonging to the plant family Cruciferae | - |
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| crucifix | (noun) a gymnastic exercise performed on the rings when the gymnast supports himself with both arms extended horizontally | - |
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| (noun) representation of the cross on which Jesus died | Synonyms: rood-tree, rood |
| crucifixion | (noun) the act of executing by a method widespread in the ancient world; the victim's hands and feet are bound or nailed to a cross | - |
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| (noun) the infliction of extremely painful punishment or suffering | Synonyms: excruciation |
| cruciform | (adjective) shaped like a cross | Synonyms: cruciate |
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| crucify | (verb) criticize harshly or violently | Synonyms: blast, pillory, savage |
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| (verb) treat cruelly | Synonyms: bedevil, dun, frustrate, rag, torment |
| (verb) hold within limits and control | Synonyms: mortify, subdue |
| (verb) kill by nailing onto a cross | - |
| crud | (noun) an ill-defined bodily ailment | - |
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| (noun) any substance considered disgustingly foul or unpleasant | Synonyms: filth, skank |
| (noun) heavy wet snow that is unsuitable for skiing | - |
| cruddy | (adjective) characterized by obscenity | Synonyms: filthy, foul, nasty, smutty |
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| crude | (adjective) not refined or processed | Synonyms: unprocessed, unrefined |
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| (adjective) belonging to an early stage of technical development; characterized by simplicity and (often) crudeness | Synonyms: primitive, rude |
| (adjective) conspicuously and tastelessly indecent | Synonyms: earthy, gross, vulgar |
| (adjective) not processed or subjected to analysis | Synonyms: raw |
| (adjective) devoid of any qualifications or disguise or adornment | Synonyms: blunt, stark |
| (adjective) not carefully or expertly made | Synonyms: rough |
| (noun) a dark oil consisting mainly of hydrocarbons | Synonyms: crude oil, fossil oil, oil, petroleum, rock oil |
| crudely | (adverb) in a crude or unrefined manner | - |
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| (adverb) in a crude and unskilled manner | Synonyms: artlessly, inexpertly |
| crudeness | (noun) an impolite manner that is vulgar and lacking tact or refinement | Synonyms: crudity, gaucheness |
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| (noun) an unpolished unrefined quality | Synonyms: roughness |
| (noun) a wild or unrefined state | Synonyms: crudity, primitiveness, primitivism, rudeness |
| crudites | (noun) raw vegetables cut into bite-sized strips and served with a dip | - |
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| crudity | (noun) an impolite manner that is vulgar and lacking tact or refinement | Synonyms: crudeness, gaucheness |
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| (noun) a wild or unrefined state | Synonyms: crudeness, primitiveness, primitivism, rudeness |
| cruel | (adjective) (of persons or their actions) able or disposed to inflict pain or suffering | Synonyms: barbarous, brutal, fell, roughshod, savage, vicious |
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| cruelly | (adverb) excessively | - |
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| (adverb) with cruelty | - |
| cruelness | (noun) the quality of being cruel and causing tension or annoyance | Synonyms: cruelty, harshness |
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| cruelty | (noun) a cruel act; a deliberate infliction of pain and suffering | Synonyms: inhuman treatment |
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| (noun) the quality of being cruel and causing tension or annoyance | Synonyms: cruelness, harshness |
| (noun) feelings of extreme heartlessness | Synonyms: mercilessness, pitilessness, ruthlessness |
| cruet | (noun) bottle that holds wine or oil or vinegar for the table | Synonyms: crewet |
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| cruise | (noun) an ocean trip taken for pleasure | Synonyms: sail |
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| (verb) sail or travel about for pleasure, relaxation, or sightseeing | - |
| (verb) travel at a moderate speed | - |
| (verb) drive around aimlessly but ostentatiously and at leisure | - |
| (verb) look for a sexual partner in a public place | - |
| cruiser | (noun) a large fast warship; smaller than a battleship and larger than a destroyer | - |
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| (noun) a large motorboat that has a cabin and plumbing and other conveniences necessary for living on board | Synonyms: cabin cruiser, pleasure boat, pleasure craft |
| (noun) a car in which policemen cruise the streets; equipped with radiotelephonic communications to headquarters | Synonyms: patrol car, police car, police cruiser, prowl car, squad car |
| cruiserweight | (noun) A weight class division in combat sports, for fighters heavier than those in the middleweight division and lighter than those in the super heavyweight division. | Synonyms: light heavyweight |
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| (noun) a professional boxer who weighs between 169 and 175 pounds | Synonyms: light heavyweight |
| cruller | (noun) small friedcake formed into twisted strips and fried; richer than doughnuts | Synonyms: twister |
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| crumb | (noun) small piece of e.g. bread or cake | - |
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| (noun) a person who is deemed to be despicable or contemptible | Synonyms: bum, dirty dog, git, lowlife, puke, rat, rotter, scum bag, scumbag, skunk, so-and-so, stinker, stinkpot |
| (noun) a very small quantity of something | - |
| (verb) remove crumbs from | - |
| (verb) break into crumbs | - |
| (verb) coat with bread crumbs | - |
| crumble | (verb) break or fall apart into fragments | Synonyms: fall apart |
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| (verb) fall into decay or ruin | Synonyms: decay, dilapidate |
| (verb) fall apart | Synonyms: break down, collapse, crumple, tumble |
| crumbliness | (noun) excessive breakableness | Synonyms: friability |
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| crumbly | (adjective) easily broken into small fragments or reduced to powder | Synonyms: friable |
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| crumhorn | (noun) a Renaissance woodwind with a double reed and a curving tube (crooked horn) | Synonyms: cromorne, krummhorn |
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| crummy | (adjective) of very poor quality; flimsy | Synonyms: bum, cheap, cheesy, chintzy, punk, sleazy, tinny |
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| crump | (verb) explode heavily or with a loud dull noise | - |
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| (verb) bombard with heavy shells | - |
| (verb) make a noise typical of an engine lacking lubricants | Synonyms: scrunch, thud |
| crumpet | (noun) a thick soft cake with a porous texture; cooked on a griddle | - |
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| crumple | (verb) become wrinkled or crumpled or creased | Synonyms: crease, crinkle, rumple, wrinkle |
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| (verb) to gather something into small wrinkles or folds | Synonyms: cockle, knit, pucker, rumple |
| (verb) fold or collapse | Synonyms: buckle |
| (verb) fall apart | Synonyms: break down, collapse, crumble, tumble |
| crumpled | (adjective) of metal e.g. | Synonyms: bent, dented |
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| crunch | (noun) the act of crushing | Synonyms: compaction, crush |
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| (noun) the sound of something crunching | - |
| (noun) a critical situation that arises because of a shortage (as a shortage of time or money or resources) | - |
| (verb) reduce to small pieces or particles by pounding or abrading | Synonyms: bray, comminute, grind, mash |
| (verb) make a crushing noise | Synonyms: crackle, scranch, scraunch |
| (verb) crush with the teeth, making a grinding sound | Synonyms: munch |
| (verb) press or grind with a crushing noise | Synonyms: cranch, craunch, grind |
| crupper | (noun) a strap from the back of a saddle passing under the horse's tail; prevents saddle from slipping forward | - |
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| crural | (adjective) of or relating the leg from the knee to the foot | - |
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| crus | (noun) the leg from the knee to foot | - |
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| crusade | (noun) a series of actions advancing a principle or tending toward a particular end | Synonyms: campaign, cause, drive, effort, movement |
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| (verb) go on a crusade; fight a holy war | - |
| (verb) exert oneself continuously, vigorously, or obtrusively to gain an end or engage in a crusade for a certain cause or person; be an advocate for | Synonyms: agitate, campaign, fight, press, push |
| crusader | (noun) a disputant who advocates reform | Synonyms: meliorist, reformer, reformist, social reformer |
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| cruse | (noun) small jar; holds liquid (oil or water) | - |
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| crush | (noun) the act of crushing | Synonyms: compaction, crunch |
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| (noun) temporary love of an adolescent | Synonyms: calf love, infatuation, puppy love |
| (noun) a dense crowd of people | Synonyms: jam, press |
| (noun) leather that has had its grain pattern accentuated | Synonyms: crushed leather |
| (verb) break into small pieces | - |
| (verb) become injured, broken, or distorted by pressure | - |
| (verb) come out better in a competition, race, or conflict | Synonyms: beat, beat out, shell, trounce, vanquish |
| (verb) make ineffective | Synonyms: break down |
| (verb) to compress with violence, out of natural shape or condition | Synonyms: mash, squash, squeeze, squelch |
| (verb) crush or bruise | Synonyms: jam |
| (verb) humiliate or depress completely | Synonyms: smash |
| (verb) come down on or keep down by unjust use of one's authority | Synonyms: oppress, suppress |
| crushed | (adjective) subdued or brought low in condition or status | Synonyms: broken, humbled, humiliated, low |
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| (adjective) treated so as to have a permanently wrinkled appearance | - |
| crusher | (noun) a device that crushes something | - |
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| crushing | (adjective) physically or spiritually devastating; often used in combination | Synonyms: devastating |
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| (noun) forceful prevention; putting down by power or authority | Synonyms: quelling, stifling, suppression |
| crushingly | (adverb) in a crushing manner | - |
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| crust | (noun) the trait of being rude and impertinent; inclined to take liberties | Synonyms: cheekiness, freshness, gall, impertinence, impudence, insolence |
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| (noun) the outer layer of the Earth | Synonyms: Earth's crust |
| (noun) a hard outer layer that covers something | Synonyms: encrustation, incrustation |
| (verb) form a crust or form into a crust | - |
| crustacean | (adjective) of or belonging to the class Crustacea | Synonyms: crustaceous |
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| (noun) any mainly aquatic arthropod usually having a segmented body and chitinous exoskeleton | - |
| crustaceous | (adjective) being or having or resembling a hard crust or shell | - |
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| (adjective) of or belonging to the class Crustacea | Synonyms: crustacean |
| crustal | (adjective) of or relating to or characteristic of the crust of the earth or moon | - |
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| crusted | (adjective) having a hardened crust as a covering | Synonyms: crustlike, crusty, encrusted |
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| crustlike | (adjective) having a hardened crust as a covering | Synonyms: crusted, crusty, encrusted |
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| crustose | (adjective) (of lichens) having a thin crusty thallus that adheres closely to the surface on which it is growing | - |
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| crusty | (adjective) having a hardened crust as a covering | Synonyms: crusted, crustlike, encrusted |
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| (adjective) brusque and surly and forbidding | Synonyms: curmudgeonly, gruff, ill-humored, ill-humoured |
| crutch | (noun) anything that serves as an expedient | - |
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| (noun) a wooden or metal staff that fits under the armpit and reaches to the ground; used by disabled person while walking | - |
| crux | (noun) the most important point | Synonyms: crux of the matter |
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