Word Study
acuity
CIDE DICTIONARY
acuity, n. [LL. acuitas: cf. F. acuité.].
Sharpness or acuteness, as of a needle, wit, etc. [1913 Webster]
OXFORD DICTIONARY
acuity, n. sharpness, acuteness (of a needle, senses, understanding).
Etymology
F acuit{eacute} or med.L acuitas f. acuere sharpen: see ACUTE
THESAURUS
acuity
acridity, acumen, acumination, acuteness, adroitness, agility, alertness, apperception, aptitude, aptness, astuteness, attention, attentiveness, braininess, brightness, brilliance, clear thinking, cleverness, cogency, dexterity, discernment, edge, esprit, farseeingness, farsightedness, flair, foresight, foresightedness, genius, giftedness, gifts, incisiveness, insight, keen-wittedness, keenness, longheadedness, longsightedness, mental alertness, mercurial mind, mucronation, native cleverness, nimble mind, nimble-wittedness, nimbleness, nous, penetration, perception, perceptiveness, percipience, perspicaciousness, perspicacity, perspicuity, perspicuousness, pointedness, prickliness, promptitude, promptness, providence, punctuality, quick parts, quick thinking, quick wit, quick-wittedness, quickness, readiness, ready wit, sagaciousness, sagacity, savvy, sensibility, sharp-wittedness, sharpness, sleeplessness, smartness, smarts, spinosity, sprightly wit, talent, thorniness, trenchancy, wakefulnessROGET THESAURUS
acuity
Sharpness
N sharpness, acuity, acumination, spinosity, point, spike, spine, spicule, spiculum, needle, hypodermic needle, tack, nail, pin, prick, prickle, spur, rowel, barb, spit, cusp, horn, antler, snag, tag thorn, bristle, Adam's needle, bear grass, tine, yucca, nib, tooth, tusk, spoke, cog, ratchet, crag, crest, arete, cone peak, sugar loaf, pike, aiguille, spire, pyramid, steeple, beard, chevaux de frise, porcupine, hedgehog, brier, bramble, thistle, comb, awn, beggar's lice, bur, burr, catchweed, cleavers, clivers, goose, grass, hairif, hariff, flax comb, hackle, hatchel, heckle, wedge, knife edge, cutting edge, blade, edge tool, cutlery, knife, penknife, whittle, razor, razor blade, safety razor, straight razor, electric razor, scalpel, bistoury, lancet, plowshare, coulter, colter, hatchet, ax, pickax, mattock, pick, adze, gill, billhook, cleaver, cutter, scythe, sickle, scissors, shears, pruning shears, cutters, wire cutters, nail clipper, paper cutter, sword, bodkin, belduque, bowie knife, paring knife, bushwhacker, drawing knife, drawing shave, microtome, chisel, screwdriver blade, flint blade, guillotine, sharpener, hone, strop, grindstone, whetstone, novaculite, steel, emery, 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, snaggy, digitated, two-edged, fusiform, 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, set.For further exploring for "acuity" in Webster Dictionary Online