| catamenial | (adjective) of or relating to menstruation or the menses | Synonyms: menstrual |
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| catamite | (noun) a boy who submits to a sexual relationship with a man | - |
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| catamount | (noun) large American feline resembling a lion | Synonyms: cougar, Felis concolor, mountain lion, painter, panther, puma |
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| (noun) short-tailed wildcats with usually tufted ears; valued for their fur | Synonyms: lynx |
| catamountain | (noun) bushy-tailed wildcat of Europe that resembles the domestic cat and is regarded as the ancestor of the domestic cat | Synonyms: European wildcat, Felis silvestris |
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| catananche | (noun) any of several plants of the genus Catananche having long-stalked heads of blue or yellow flowers | - |
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| cataphasia | (noun) a speech disorder in which the same word is repeated several times in succession | - |
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| cataphatic | (adjective) of or relating to the religious belief that God can be known to humans positively or affirmatively | - |
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| cataphatism | (noun) the religious belief that God has given enough clues to be known to humans positively and affirmatively (e.g., God created Adam `in his own image') | - |
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| cataphoresis | (noun) the motion of charged particles in a colloid under the influence of an electric field; particles with a positive charge go to the cathode and negative to the anode | Synonyms: dielectrolysis, electrophoresis, ionophoresis |
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| cataphoretic | (adjective) of or relating to electrophoresis | Synonyms: electrophoretic |
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| cataphract | (noun) armor that protects the wearer's whole body | Synonyms: body armor, body armour, coat of mail, suit of armor, suit of armour |
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| cataphyll | (noun) a reduced or scarcely developed leaf at the start of a plant's life (i.e., cotyledons) or in the early stages of leaf development | - |
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| cataplasia | (noun) (biology) degenerative reversion of cells or tissue to a less differentiated or more primitive form | - |
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| cataplasm | (noun) a medical dressing consisting of a soft heated mass of meal or clay that is spread on a cloth and applied to the skin to treat inflamed areas or improve circulation etc. | Synonyms: plaster, poultice |
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| cataplastic | (adjective) of or relating to cataplasia | - |
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| catapult | (noun) an engine that provided medieval artillery used during sieges; a heavy war engine for hurling large stones and other missiles | - |
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| (noun) a plaything consisting of a Y-shaped stick with elastic between the arms; used to propel small stones | Synonyms: sling, slingshot |
| (noun) a device that launches aircraft from a warship | Synonyms: launcher |
| (verb) shoot forth or launch, as if from a catapult | - |
| (verb) hurl as if with a sling | Synonyms: sling |
| catapultian | (adjective) of or like a catapult | Synonyms: catapultic |
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| catapultic | (adjective) of or like a catapult | Synonyms: catapultian |
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| cataract | (noun) a large waterfall; violent rush of water over a precipice | - |
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| (noun) an eye disease that involves the clouding or opacification of the natural lens of the eye | - |
| catarrh | (noun) inflammation of the nose and throat with increased production of mucus | - |
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| catarrhal | (adjective) of or relating to a catarrh | - |
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| catarrhine | (adjective) of or related to Old World monkeys that have nostrils together and opening downward | Synonyms: catarrhinian |
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| (noun) of Africa or Arabia or Asia; having nonprehensile tails and nostrils close together | Synonyms: Old World monkey |
| catarrhinian | (adjective) of or related to Old World monkeys that have nostrils together and opening downward | Synonyms: catarrhine |
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| catastrophe | (noun) an event resulting in great loss and misfortune | Synonyms: calamity, cataclysm, disaster, tragedy |
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| (noun) a sudden violent change in the earth's surface | Synonyms: cataclysm |
| (noun) a state of extreme (usually irremediable) ruin and misfortune | Synonyms: disaster |
| catastrophic | (adjective) extremely harmful; bringing physical or financial ruin | Synonyms: ruinous |
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| catastrophically | (adverb) with unfortunate consequences | - |
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| catathymia | (noun) A state in which mental processes are under the control of the emotions. | - |
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| catatonia | (noun) a form of schizophrenia characterized by a tendency to remain in a fixed stuporous state for long periods; the catatonia may give way to short periods of extreme excitement | Synonyms: catatonic schizophrenia, catatonic type schizophrenia |
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| (noun) extreme tonus; muscular rigidity; a common symptom in catatonic schizophrenia | - |
| catatonic | (adjective) characterized by catatonia especially either rigidity or extreme laxness of limbs | - |
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| catbird | (noun) North American songbird whose call resembles a cat's mewing | Synonyms: Dumetella carolinensis, gray catbird, grey catbird |
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| (noun) any of various birds of the Australian region whose males build ornamented structures resembling bowers in order to attract females | Synonyms: bowerbird |
| catboat | (noun) a sailboat with a single mast set far forward | - |
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| catbrier | (noun) a very prickly woody vine of the eastern United States growing in tangled masses having tough round stems with shiny leathery leaves and small greenish flowers followed by clusters of inedible shiny black berries | Synonyms: briar, brier, bullbrier, greenbrier, horse-brier, horse brier, Smilax rotundifolia |
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| catcall | (noun) a cry expressing disapproval | - |
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| (verb) utter catcalls at | - |
| catch | (noun) the act of catching an object with the hands | Synonyms: grab, snap, snatch |
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| (noun) the act of apprehending (especially apprehending a criminal) | Synonyms: apprehension, arrest, collar, pinch, taking into custody |
| (noun) a cooperative game in which a ball is passed back and forth | - |
| (noun) a fastener that fastens or locks a door or window | - |
| (noun) a restraint that checks the motion of something | Synonyms: stop |
| (noun) a drawback or difficulty that is not readily evident | Synonyms: gimmick |
| (noun) a break or check in the voice (usually a sign of strong emotion) | - |
| (noun) anything that is caught (especially if it is worth catching) | - |
| (noun) a person regarded as a good matrimonial prospect | Synonyms: match |
| (noun) the quantity that was caught | Synonyms: haul |
| (verb) come down with | - |
| (verb) be struck or affected by | - |
| (verb) delay or hold up; prevent from proceeding on schedule or as planned | - |
| (verb) detect a blunder or misstep | Synonyms: trip up |
| (verb) discover or come upon accidentally, suddenly, or unexpectedly; catch somebody doing something or in a certain state | - |
| (verb) grasp with the mind or develop an understanding of | Synonyms: get |
| (verb) become aware of | - |
| (verb) be the catcher | - |
| (verb) catch up with and possibly overtake | Synonyms: catch up with, overtake |
| (verb) take hold of so as to seize or restrain or stop the motion of | Synonyms: grab |
| (verb) succeed in catching or seizing, especially after a chase | Synonyms: capture, get |
| (verb) capture as if by hunting, snaring, or trapping | Synonyms: capture |
| (verb) to hook or entangle | Synonyms: hitch |
| (verb) attract and fix | Synonyms: arrest, get |
| (verb) cause to become accidentally or suddenly caught, ensnared, or entangled | - |
| (verb) spread or be communicated | - |
| (verb) take in and retain | - |
| (verb) reach with a blow or hit in a particular spot | Synonyms: get |
| (verb) apprehend and reproduce accurately | Synonyms: get |
| (verb) attract; cause to be enamored | Synonyms: becharm, beguile, bewitch, captivate, capture, charm, enamor, enamour, enchant, entrance, fascinate, trance |
| (verb) reach in time | - |
| (verb) hear, usually without the knowledge of the speakers | Synonyms: overhear, take in |
| (verb) perceive with the senses quickly, suddenly, or momentarily | Synonyms: pick up |
| (verb) see or watch | Synonyms: see, take in, view, watch |
| (verb) suffer from the receipt of | Synonyms: get |
| (verb) perceive by hearing | Synonyms: get |
| (verb) get or regain something necessary, usually quickly or briefly | - |
| (verb) check oneself during an action | - |
| (verb) start burning | - |
| catchall | (noun) an enclosure or receptacle for odds and ends | - |
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| catcher | (noun) the position on a baseball team of the player who is stationed behind home plate and who catches the balls that the pitcher throws | - |
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| (noun) (baseball) the person who plays the position of catcher | Synonyms: backstop |
| catchfly | (noun) mostly perennial herbs with sticky stems that catch insects; widespread in north temperate zone | Synonyms: lychnis |
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| (noun) any plant of the genus Silene | Synonyms: campion, silene |
| catching | (adjective) (of disease) capable of being transmitted by infection | Synonyms: communicable, contagious, contractable, transmissible, transmittable |
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| (noun) (baseball) playing the position of catcher on a baseball team | - |
| (noun) the act of detecting something; catching sight of something | Synonyms: detection, espial, spotting, spying |
| (noun) becoming infected | Synonyms: contracting |
| catchment | (noun) a structure in which water is collected (especially a natural drainage area) | - |
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| catchpenny | (adjective) designed to sell quickly without concern for quality | - |
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| catchphrase | (noun) a phrase that has become a catchword | Synonyms: catch phrase |
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| catchweed | (noun) annual having the stem beset with curved prickles; North America and Europe and Asia | Synonyms: cleavers, clivers, Galium aparine, goose grass, spring cleavers |
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| catchword | (noun) a favorite saying of a group, organization or individual | Synonyms: motto, shibboleth, slogan |
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| (noun) a word printed at the top of the page of a dictionary or other reference book to indicate the first or last item on that page | Synonyms: guide word, guideword |
| catchy | (adjective) likely to attract attention | Synonyms: attention-getting |
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| (adjective) having concealed difficulty | Synonyms: tricky |
| catclaw | (noun) erect shrub with small if any spines having racemes of white to yellow flowers followed by curved pointed pods and black shiny seeds; West Indies and Florida | Synonyms: black bead, cat's-claw, Pithecellobium unguis-cati |
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| catechesis | (noun) oral religious instruction (as before baptism or confirmation) | - |
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| catechetic | (adjective) of or relating to or resembling a rigorous catechism | Synonyms: catechistic |
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| (adjective) of or relating to or involving catechesis | Synonyms: catechetical |
| catechetical | (adjective) of or relating to or involving catechesis | Synonyms: catechetic |
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| catechin | (noun) a tannic acid that is extracted from black catechu as a white crystalline substance | - |
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| catechise | (verb) examine through questioning and answering | Synonyms: catechize |
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| (verb) give religious instructions to | Synonyms: catechize |
| catechism | (noun) an elementary book summarizing the principles of a Christian religion; written as questions and answers | - |
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| (noun) a series of questions put to an individual (such as a political candidate) to elicit their views | - |
| catechismal | (adjective) of or relating to a catechism summarizing the principles of Christianity | - |
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| catechist | (noun) one who instructs catechumens in preparation for baptism (especially one using a catechism) | - |
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| catechistic | (adjective) of or relating to or resembling a rigorous catechism | Synonyms: catechetic |
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| catechize | (verb) examine through questioning and answering | Synonyms: catechise |
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| (verb) give religious instructions to | Synonyms: catechise |
| catecholamine | (noun) any of a group of chemicals including epinephrine and norepinephrine that are produced in the medulla of the adrenal gland | - |
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| catechu | (noun) East Indian spiny tree having twice-pinnate leaves and yellow flowers followed by flat pods; source of black catechu | Synonyms: Acacia catechu, Jerusalem thorn |
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| (noun) extract of the heartwood of Acacia catechu used for dyeing and tanning and preserving fishnets and sails; formerly used medicinally | Synonyms: black catechu |
| catechumen | (noun) a new convert being taught the principles of Christianity by a catechist | Synonyms: neophyte |
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| categorem | (noun) a categorematic expression; a term capable of standing alone as the subject or predicate of a logical proposition | Synonyms: categoreme |
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| categorematic | (adjective) of a term or phrase capable of standing as the subject or (especially) the predicate of a proposition | - |
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| categoreme | (noun) a categorematic expression; a term capable of standing alone as the subject or predicate of a logical proposition | Synonyms: categorem |
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| categorial | (adjective) of or relating to the concept of categories | - |
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| categoric | (adjective) relating to or included in a category or categories | Synonyms: categorical |
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| (adjective) not modified or restricted by reservations | Synonyms: categorical, flat, unconditional |
| categorical | (adjective) relating to or included in a category or categories | Synonyms: categoric |
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| (adjective) not modified or restricted by reservations | Synonyms: categoric, flat, unconditional |
| categorically | (adverb) in an unqualified manner | Synonyms: flatly, unconditionally |
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| categorisation | (noun) the act of distributing things into classes or categories of the same type | Synonyms: assortment, categorization, classification, compartmentalisation, compartmentalization |
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| (noun) the basic cognitive process of arranging into classes or categories | Synonyms: categorization, classification, sorting |
| (noun) a group of people or things arranged by class or category | Synonyms: categorization, classification |
| categorise | (verb) place into or assign to a category | Synonyms: categorize |
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| categorised | (adjective) arranged into categories | Synonyms: categorized |
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| categorization | (noun) the act of distributing things into classes or categories of the same type | Synonyms: assortment, categorisation, classification, compartmentalisation, compartmentalization |
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| (noun) the basic cognitive process of arranging into classes or categories | Synonyms: categorisation, classification, sorting |
| (noun) a group of people or things arranged by class or category | Synonyms: categorisation, classification |
| categorize | (verb) place into or assign to a category | Synonyms: categorise |
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| categorized | (adjective) arranged into categories | Synonyms: categorised |
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| category | (noun) a general concept that marks divisions or coordinations in a conceptual scheme | - |
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| (noun) a collection of things sharing a common attribute | Synonyms: class, family |
| catena | (noun) a chain of connected ideas or passages or objects so arranged that each member is closely related to the preceding and following members (especially a series of patristic comments elucidating Christian dogma) | - |
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| catenary | (noun) the curve theoretically assumed by a perfectly flexible and inextensible cord of uniform density and cross section hanging freely from two fixed points | - |
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| catenate | (verb) arrange in a series of rings or chains, as for spores | Synonyms: catenulate |
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| catenulate | (adjective) having a chainlike form | Synonyms: chainlike |
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| (verb) arrange in a series of rings or chains, as for spores | Synonyms: catenate |
| cater | (verb) give what is desired or needed, especially support, food or sustenance | Synonyms: ply, provide, supply |
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| (verb) supply food ready to eat; for parties and banquets | - |
| catercorner | (adjective) slanted across a polygon on a diagonal line | Synonyms: cata-cornered, catacorner, cater-cornered, catty-corner, catty-cornered, kitty-corner, kitty-cornered |
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| caterer | (noun) someone who provides food and service (as for a party) | - |
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| catering | (noun) providing food and services | - |
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| caterpillar | (noun) a wormlike and often brightly colored and hairy or spiny larva of a butterfly or moth | - |
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| caterwaul | (noun) the yowling sound made by a cat in heat | - |
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| (verb) utter shrieks, as of cats | Synonyms: yowl |
| catfish | (noun) any of numerous mostly freshwater bottom-living fishes of Eurasia and North America with barbels like whiskers around the mouth | Synonyms: siluriform fish |
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| (noun) large ferocious northern deep-sea food fishes with strong teeth and no pelvic fins | Synonyms: wolf fish, wolffish |
| (noun) flesh of scaleless food fish of the southern United States; often farmed | Synonyms: mudcat |
| (verb) To deceive someone by professing romantic feelings but actually using a false identity | - |
| catgut | (noun) a strong cord made from the intestines of sheep and used in surgery | Synonyms: gut |
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| (noun) perennial subshrub of eastern North America having downy leaves yellowish and rose flowers and; source of rotenone | Synonyms: goat's rue, Tephrosia virginiana, wild sweet pea |
| catharsis | (noun) (psychoanalysis) purging of emotional tensions | Synonyms: abreaction, katharsis |
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| (noun) purging the body by the use of a cathartic to stimulate evacuation of the bowels | Synonyms: katharsis, purgation |
| cathartic | (adjective) emotionally purging (of e.g. art) | Synonyms: releasing |
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| (adjective) strongly laxative | Synonyms: evacuant, purgative |
| (adjective) emotionally purging | Synonyms: psychotherapeutic |
| (noun) a purging medicine; stimulates evacuation of the bowels | Synonyms: aperient, physic, purgative |
| cathartid | (noun) large birds of prey superficially similar to Old World vultures | Synonyms: New World vulture |
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| cathect | (verb) inject with libidinal energy | - |
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| cathectic | (adjective) of or relating to cathexis | - |
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| cathedra | (noun) a throne that is the official chair of a bishop | Synonyms: bishop's throne |
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| cathedral | (adjective) relating to or containing or issuing from a bishop's office or throne | - |
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| (noun) any large and important church | - |
| (noun) the principal Christian church building of a bishop's diocese | Synonyms: duomo |
| catheter | (noun) a thin flexible tube inserted into the body to permit introduction or withdrawal of fluids or to keep the passageway open | - |
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| catheterisation | (noun) the operation of introducing a catheter into the body | Synonyms: catheterization |
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| catheterise | (verb) insert a catheter into (a body part) | Synonyms: catheterize |
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| catheterization | (noun) the operation of introducing a catheter into the body | Synonyms: catheterisation |
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| catheterize | (verb) insert a catheter into (a body part) | Synonyms: catheterise |
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| cathexis | (noun) (psychoanalysis) the libidinal energy invested in some idea or person or object | Synonyms: charge |
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| cathode | (noun) a negatively charged electrode that is the source of electrons entering an electrical device | - |
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| (noun) the positively charged terminal of a voltaic cell or storage battery that supplies current | - |
| cathodic | (adjective) of or at or pertaining to a cathode | - |
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| catholic | (adjective) free from provincial prejudices or attachments | - |
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