jack-a-dandy, n. dandy, dude, fop, coxcomb, Beau Brummel, SI.peacock, popinjay, fancy Dan, silk-sock Sam; prettyboy, exquisite, silk-stocking, fashion plate, clotheshorse; zoot suiter, macaroni, sharp dresser, fashionable; blade, gay blade, buck, Chiefly Brit, blood, spark, SI. swell, Brit. Inf. toff; beau, boulevardier, man-about-town, gallant, ladykiller, ladies' man.
jackal, n. drudge, hack, slave, flunky, fag, drone, minion; lackey, toady, yes man, creature, cat's paw, votary; doormat, carpet knight, Inf. bootlicker, lickspittle, groveler; stooge, follower, tool, dupe, puppet, instrument, henchman; hanger-on, parasite, leech, bloodsucker, sycophant, fawner.
jackanapes, n. 1. whippersnapper, malapert, pup, boldface, brazenface, swaggerer; upstart, wiseacre, weisenheimer, SI. wise guy, smarty, smart-aleck, smarty-pants.
2. imp, mischief-maker, monkey, hooligan, rascal, punk, gamin; rapscallion, devil, scamp, Inf. bugger; bad boy, Fr. enfant terrible, Inf. holy terror, brat, spoiled brat.
jackass, n. 1. ass, male donkey, donkey, jack, burro; dickey, SI. neddy, SI. longear, Brit. SI. moke, Chiefly Scot. cuddy.
2. fool, dolt, blockhead, imbecile, moron; ignoramus, idiot, tomfool, tomnoddy, noddy; oaf, clod, dunce, boob, boobie, ninny, SI. schmuck; bungler, boggier, lubber, clodpole, looby; simpleton, SI. simp, loon, dullard, witling, SI. dummy, SI. dumbbell, SI. numskull, ninnyhammer; SI. dingbat, SI. ding-a-ling, SI. jerk, SI. goof, SI. galoot, SI. goofball; sap, chump, SI. klutz, SI. mutt, SI. schlemiel; dope, dimwit, nincompoop, lamebrain, SI. juggins, SI. muggins, halfwit; flibbertigibbet, stupid, SI. nitwit, SI. dimwit.
3. dumbhead, dullhead, jughead, Ger. Dummkopf lunkhead, knucklehead, chowderhead, chucklehead; pinhead, bonehead, thickhead, fathead, muttonhead, woodenhead, bullethead; blubberhead, dunderhead, dunderpate, blunderbuss; cabbagehead, pumpkin-head, puddinghead, mushhead, Brit. Inf. jolterhead, Archaic, toddyhead; SI. charley, SI. tony, SI. noodle, SI. doughhead; scatterbrain, rattlebrain, rattlepate, harebrain, featherbrain, featherhead; goose, ass, donkey, silly goose, silly, dumb bunny, calf, cuckoo, gull.
jacket, n. 1'. coat, coatee, pea jacket, mackinaw jacket or mackinaw, Inf mac, windbreaker, dreadnought, parka, anorak; cardigan, camisole, sack, jumper; sports coat or jacket, blazer; (in the Renaissance) doublet, (in the eighteenth and nineteenth centuries) spencer, (in Greece and the Levant) grego, (formerly of sailors) monkey jacket, Clothing, reefer.
2. casing, case, encasement, sheath, sheathing, envelope; cover, covering, wrap, wrapper, wrapping.