thick

1 having or being of relatively great depth or extent from one surface to its opposite <a thick board was laid across the pit> Synonyms chunky, fat Related Words blockish, blocky, bulky, dense, hefty, thickish; broad, deep, wide Near Antonyms narrow, shallow Antonyms skinny, slender, slim, thin

2 being of a consistency that resists flow <thick maple syrup for pancakes> Synonyms ropy (also ropey), syrupy, viscid, viscous Related Words creamy, heavy, slushy, thickened, thickish, turbid, undiluted; semifluid, semiliquid; gluey, glutinous, sticky; gelatinous, gooey, gummy, jellylike; concentrated, condensed Near Antonyms flowing, fluid; dilute, diluted, liquid, watered-down, weak Antonyms runny, soupy, thin, watery

3 closely acquainted <those two have been thick since grade school> Synonyms bosom, buddy-buddy, chummy, close, especial, friendly, inseparable, intimate, inward, near, familiar, tightRelated Words clannish, close-knit, tight-knit; affable, boon, companionable, convivial, cordial, genial, gracious, hearty; gregarious, sociable, social; comfortable, cozy, easy, snug; amicable, neighborly; confidential, secretive; adoring, affectionate, dear, devoted, fond, loving, tender, tenderhearted, warmNear Antonyms aloof, antisocial, cold, cool, detached, distant, frosty, remote, reserved, standoffish, unfriendly, unsociable, withdrawnAntonyms distant

4 having a greater than usual measure across <cross your name off the list with a really thick line so I can see it> Synonyms broad, fat, wideRelated Words expansive, extensive, sweeping; commodious, roomy, spacious; outsize (also outsized), oversize (or oversized), sizable (or sizeable), substantial, tidy, voluminousNear Antonyms fine, hairlike, reedlike; elongate (or elongated), needlelike; bottleneck, close, compressed, condensed, constricted, contracted, squeezed, tight, tightened; attenuate, attenuated; small, smallish, undersized (also undersize)Antonyms hairline, narrow, paper-thin, skinny, slender, slim, slim-jim, thin

5 having little space between items or parts <a hedge thick with gorse bushes> Synonyms compact, crowded, dense, jam-packed, packed, serried, close, tightRelated Words crammed, jammed, overcrowded; crushed, massed, pressed, squeezed, wall-to-wall; airtight, snug; compacted, compressed, condensed, congested; firm, hard, solid; impenetrable, impermeable, imperviousNear Antonyms commodious, roomy, spaciousAntonyms airy, loose, open, uncrowded

6 not having or showing an ability to absorb ideas readily <couldn't believe that his guests were so thick that they were missing his hints that it was time to leave> Synonyms airheaded, birdbrained, bonehead, boneheaded, brain-dead, brainless, bubbleheaded, chuckleheaded, dense, dim, dim-witted, doltish, dopey (also dopy), dorky [slang], dull, dumb, dunderheaded, empty-headed, fatuous, gormless [chiefly British], half-witted, knuckleheaded, lamebrain (or lamebrained), lunkheaded, mindless, oafish, obtuse, opaque, pinheaded, senseless, simple, slow, slow-witted, soft, softheaded, stupid, thickheaded, thick-witted, unintelligent, unsmart, vacuous, weak-minded, witlessRelated Words cretinous, feebleminded, simpleminded; boobish, foolish, idiotic (also idiotical), imbecile (or imbecilic), moronic; ignorant, illiterate, lowbrow, uneducated, uninformed, unintellectual, untaught, unthinking; absurd, asinine, balmy, cockeyed, crackpot, crazy, cuckoo, daffy, daft, dippy, dotty, featherheaded, fool, half-baked, harebrained, insane, kooky (also kookie), loony (also looney), lunatic, mad, nonsensical, nutty, preposterous, sappy, screwball, silly, tomfool, unwise, wacky (also whacky), zany; fallacious, illogical, invalid, irrational, unreasonableNear Antonyms ingenious, resourceful; acute, astute, discerning, insightful, keen, knowing, perceptive, percipient, perspicacious, sagacious, sage, sapient, savvy, wise; cerebral, erudite, highbrow, intellectual, knowledgeable, learned, literate, scholarly, thinking, well-read; educated, informed, schooled, skilled, trained; crafty, cunning, foxy, shrewd, wily; judicious, prudent, sane, sensible, sound; logical, rational, reasonable, validAntonyms apt, brainy, bright, brilliant, clever, fast, hyperintelligent, intelligent, keen, nimble, quick, quick-witted, sharp, sharp-witted, smart, supersmart, ultrasmart

7 possessing or covered with great numbers or amounts of something specified <a meadow thick with wildflowers> Synonyms abounding, abundant, awash, flush, fraught, lousy, replete, swarming, teeming, rife, throngingRelated Words brimming, bulging, bursting, chock-full (or chockful), crammed, crowded, fat, filled, full, jammed, jam-packed, loaded, packed, saturated, stuffed; clogged, congested, overcrowded, overfilled, overflowing, overfull, overladen, overloaded, overstuffed, surfeited; alive, animated, astir, bustling, busy, buzzing, humming, livelyNear Antonyms bare, barren, blank, devoid, empty, stark, vacant, void; depleted, drained, exhausted; deficient, incomplete, insufficient, short