deceive, v. mislead, misinform, misguide, sail under false colors; delude, fool, take in, throw dust in the eyes of, pull the wool over the eyes of, Inf. slip or pass [s.t.] over on, slip or pass one over on; cozen, dupe, gull, defraud, cheat; rook, victimize, Archaic, chouse, defraud, bilk, swindle; steal a march on, cog, Sl. take, Sl. snooker; pass off, palm off, impose upon, pull a fast one on, Inf. throw a curve; humbug, gammon, bluff, juggle, have [s.t.] up one's sleeve, Inf. flimflam; hoodwink, trick, outwit, bamboozle, overreach; entrap, ensnare, enmesh; beguile, seduce, bait, decoy; lead on, take for a ride, Inf. fake [s.o.] out, Inf. rope [s.o.] in, Inf. string along; All Inf. fast-talk, flam, hype, jive, buffalo, bulldoze; All Sl. con, snow, suck in, sucker in, murphy; betray, play false, double-cross, two-time, Sl. shaft, Sl. cross [s.o.] up.
deceiver, n. cheat, cheater, duper, fraud, deluder, cozener, outwitter; hypocrite, dissimulator, tartuffe, Pecksniff, Inf. used-car salesman, tricky dick; bamboozler, hoodwinker, swindler, sharper, defrauder, bilker, fleecer, Uriah Heep; knave, scoundrel, rogue, mountebank, Fagin, snake in the grass, cockatrice; impostor, pretender, charlatan, quack, confidence man, Sl. con man, wolf in sheep's clothing, ass in lion's skin; trickster, hoaxster, humbug, juggler, prestidigitator; traitor, betrayer, Judas, informer, Benedict Arnold, quisling, Sl. stool pigeon; liar, dissembler, perjurer, prevaricator, circumventor; dodger, weasel, fox, Artful Dodger.
decelerate, v. 1. slow up or down, wind down, de-escalate; put the brakes on, throttle down, check or reduce speed, brake; come to a stop or halt.
2. let up on, ease up on, go easy on; relax, take it easy, take it slow, loosen up.
decency, n. 1. propriety, good taste, decorum, dignity, respectability; appropriateness, seemliness, fitness, suitability, suitableness, becomingness; etiquette, formality.
2. virtue, goodness; chastity, purity, modesty, pudency, continence; kindness, generosity, niceness, pleasantness; amenity.
decent, adj. 1. fitting, befitting, appropriate, Fr. comme ilfaut, proper, mannerly, decorous, dignified; tasteful, in good taste.
2. modest, chaste, pure, virtuous; prudish, nice-nelly.
3. respectable, worthy, upright, honest, honest as the day is long; honorable, trustworthy, dependable.
4. attractive, comely, fair, good-looking, of seemly appearance; wholesome, like the girl next door.
5. adequate, sufficient, passable, fairly good, good enough, not bad, tolerable, reasonable; mediocre, indifferent, moderate, ordinary, so-so.
6. kind, obliging, accommodating, generous; courteous, thoughtful.
deception, n. 1. dissimulation, duplicity, hypocrisy, deceit. See - deceit (defs. 1, 3).
2. ruse, strategem, artifice, wile. See - deceit (def. 2).
deceptive, adj. fallacious, illusory, illusive, spurious, factitious; deceiving, misleading, evasive, elusive, dodgy, shifty, slippery; fraudulent, false, deceitful, hollow; catchy, sophistical, casuistic; specious, bogus, sham, counterfeit, pseudo, mock; chimerical, delusive, visionary, unreal, imaginary; feigned, fancied, pretended, make-believe.