sharp as a tack

adjective

Roget 498: intelligent [Applied to persons], quick of apprehension, keen, acute, alive, brainy, awake, bright, quick, sharp; quick witted, keen witted, clear witted, sharp-eyed, sharp sighted, sharp witted; wide-awake; canny, shrewd, astute; clear-headed; farsighted etc. 510; discerning, perspicacious, penetrating, piercing; argute^†; quick-witted, nimble-witted, needle-witted; sharp as a needle, sharp as a tack; alive to etc. (cognizant) 490; clever etc. (apt) 698; arch etc. (cunning) 702; pas si bete [Fr.]; acute etc. 682.    wise, sage, sapient, sagacious, reasonable, rational, sound, in one's right mind, sensible, abnormis sapiens [Lat.], judicious, strong-minded.    unprejudiced, unbiased, unbigoted^†, unprepossessed^†; undazzled^†, unperplexed^†; unwarped judgment^†, impartial, equitable, fair.    cool; cool-headed, long-headed, hardheaded, strong-headed; long-sighted, calculating, thoughtful, reflecting; solid, deep, profound.    oracular; heaven-directed, heaven-born.    prudent etc. (cautious) 864; sober, stand, solid; considerate, politic, wise in one's generation; watchful etc. 459; provident etc. (prepared) 673; in advance of one' age; wise as a serpent, wise as Solomon, wise as Solon.    [Applied to actions] wise, sensible, reasonable, judicious; well-thought-out, well-planned, well-judged, well-advised; prudent, politic; expedient etc. 646.    ... show more

Roget 702: cunning, crafty, artful; skillful etc. 698; subtle, feline, vulpine; cunning as a fox, cunning as a serpent; deep, deep laid; profound; designing, contriving; intriguing etc. v.; strategic, diplomatic, politic, Machiavelian, timeserving^†; artificial; tricky, tricksy^†; wily, sly, slim, insidious, stealthy; underhand etc. (hidden) 528; subdolous^†; deceitful etc. 545; slippery as an eel, evasive etc. 623; crooked; arch, pawky^†, shrewd, acute; sharp, sharp as a tack, sharp as a needle^†; canny, astute, leery, knowing, up to snuff, too clever by half, not to be caught with chaff.    tactful, diplomatic, politic; polite etc. 894.    ... show more

Roget 253: sharp, keen; acute; acicular, aciform^†; aculeated^†, acuminated^†; pointed; tapering; conical, pyramidal; mucronate^†, mucronated^†; spindle shaped, needle shaped; spiked, spiky, ensiform^†, peaked, salient; cusped, cuspidate, cuspidated^†; cornute^†, cornuted^†, cornicultate^†; prickly; spiny, spinous^†, spicular; thorny, bristling, muricated^†, pectinated^†, studded, thistly, briary^†; craggy etc. (rough) 256; snaggy, digitated^†, two-edged, fusiform [Micro.]; dentiform^†, denticulated; toothed; odontoid^†; starlike; stellated^†, stelliform^†; sagittate^†, sagittiform^†; arrowheaded^†; arrowy^†, barbed, spurred.    acinaciform; apiculate^†, apiculated^†; aristate^†, awned, awny^†, bearded, calamiform^†, cone-shaped, coniform^†, crestate^†, echinate^†, gladiate^†; lanceolate^†, lanciform; awl, awl-shaped, lance-shaped, awl-shaped, scimitar-shaped, sword-shaped; setarious^†, spinuliferous^†, subulate^†, tetrahedral, xiphoid^†.    cutting; sharp edged, knife edged; sharp as a razor, keen as a razor; sharp as a needle, sharp as a tack; sharpened etc. v.; set ... show more

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