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sharp as a tack


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sharp
WordReference English Thesaurus © 2025
Sense: Adjective: having a keen point
Synonyms:
pointed Collocations, pointy, spiked, spiky Collocations, peaked, thorny, prickly, barbed, spiny, tapered Collocations, needlelike, sharp-pointed, needle-pointed, sharp as a needle, pronged, acute Collocations
Antonyms:
unsharpened, flat Collocations, blunt Collocations, unpointed, round Collocations, dull Collocations
Sense: Adjective: having a fine edge
Synonyms:
cutting Collocations, honed, sharpened, keen Collocations, edged, fine Collocations, razor-edged, knife-edged, keen-edged, razor-sharp, ground fine, sharp-edged
Antonyms:
unsharpened, flat Collocations, blunt Collocations, unpointed, round Collocations, dull Collocations
Sense: Adjective: having a keen mind
Synonyms:
smart Collocations, clever Collocations, bright Collocations, astute, brainy (informal), shrewd Collocations, intelligent Collocations, brilliant Collocations, discerning, fast Collocations, quick Collocations, on the ball (slang), quick-witted
Antonyms:
dull Collocations, dim Collocations, dim-witted, slow Collocations, naive Collocations, ignorant, dumb Collocations, stupid Collocations, unaware Collocations, slow on the uptake, not all there (informal)
Sense: Adjective: perceptive
Synonyms:
perceptive, attentive Collocations, sensitive Collocations, discerning, acute Collocations, keen Collocations, receptive, vigilant, watchful, observant, accurate Collocations, precise Collocations, clear Collocations, fine Collocations, honed, finely honed
Antonyms:
inactive, unobservant, careless Collocations, neglectful, inattentive, lax, sloppy Collocations, carefree Collocations, absent-minded, take your eye off the ball, let your guard down
Sense: Adjective: having a strong flavor
Synonyms:
strong Collocations, intense Collocations, pungent, harsh Collocations, rank Collocations, aromatic, bitter Collocations, acidic, tangy, tart Collocations, vinegary, sour Collocations
Sense: Adjective: stylish - informal
Synonyms:
stylish Collocations, cool Collocations (slang), trendy Collocations, fly Collocations (slang), swank (US, informal), swanky (informal), classy Collocations, elegant Collocations, fashionable Collocations, smart Collocations, dashing, hip Collocations, in Collocations, chic Collocations, voguish, spruce Collocations, smartly dressed, sharply dressed, sharp-dressed
Antonyms:
boring Collocations, garish, tacky Collocations, unfashionable, old-fashioned Collocations, plain Collocations, unpolished, unrefined
Sense: Adjective: causing intense pain
Synonyms:
intense Collocations, cutting Collocations, biting Collocations, acute Collocations, piercing Collocations, penetrating, severe Collocations, stinging, sarcastic, hurtful, vitriolic, painful Collocations
Antonyms:
light Collocations, gentle Collocations, mild Collocations, moderate Collocations, easy Collocations, soft Collocations, sweet Collocations, agreeable Collocations, weak Collocations
Sense: Adjective: distinct
Synonyms:
distinct Collocations, clear Collocations, well-defined, crisp Collocations, obvious Collocations, definite Collocations, clearly delineated
Antonyms:
faint Collocations, light Collocations, muffled, low Collocations, distant Collocations, unclear Collocations, hazy Collocations, foggy Collocations, blurry Collocations, indistinct, undefined Collocations, ambiguous
Sense: Adjective: able to wound with words
Synonyms:
cutting Collocations, hurtful, scathing, scalding, biting Collocations, caustic, acrimonious, sarcastic, acidic, sardonic, tart Collocations
Antonyms:
amicable, friendly Collocations, encouraging Collocations, kind Collocations, complimentary Collocations, flattering Collocations, nice Collocations, pleasant Collocations
Sense: Adjective: not honest or honorable - informal
Synonyms:
dishonest Collocations, dishonorable, dishonourable (UK), underhanded, underhand, sly Collocations, shifty, deceitful Collocations, deceiving, crafty Collocations, dodgy Collocations (UK, informal), slippery Collocations
Antonyms:
aboveboard, candid, honorable, honest Collocations, upfront, frank Collocations, open Collocations, well-intended, trustworthy Collocations
Sense: Adverb: exactly
Synonyms:
exactly Collocations, precisely Collocations, on the dot (informal), on the nose (informal), on the button (informal), bang on (slang)


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