Roget's Thesaurus: Entry 253 (Sharpness)

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#253. Sharpness. -- N. sharpness &c. adj.; acuity, acumination[obs]; spinosity[obs].

point, spike, spine, spicule[Biol], spiculum[obs]; needle, hypodermic needle, tack, nail, pin; prick, prickle; spur, rowel, barb; spit, cusp; horn, antler; snag; tag thorn, bristle; Adam's needle[obs], bear grass [U.S.], tine, yucca.

nib, tooth, tusk; spoke, cog, ratchet.

crag, crest, arete[Fr], cone peak, sugar loaf, pike, aiguille[obs]; spire, pyramid, steeple.

beard, chevaux de frise[Fr], porcupine, hedgehog, brier, bramble, thistle; comb; awn, beggar's lice, bur, burr, catchweed[obs], cleavers, clivers[obs], goose, grass, hairif[obs], hariff, flax comb, hackle, hatchel[obs], heckle.

wedge; knife edge, cutting edge; blade, edge tool, cutlery, knife, penknife, whittle, razor, razor blade, safety razor, straight razor, electric razor; scalpel; bistoury[obs], lancet; plowshare, coulter, colter[obs]; hatchet, ax, pickax, mattock, pick, adze, gill; billhook, cleaver, cutter; scythe, sickle; scissors, shears, pruning shears, cutters, wire cutters, nail clipper, paper cutter; sword &c. (arms) 727; bodkin &c. (perforator) 262; belduque[obs], bowie knife[obs], paring knife; bushwhacker [U.S.]; drawing knife, drawing shave; microtome[Microbiol]; chisel, screwdriver blade; flint blade; guillotine.

sharpener, hone, strop; grindstone, whetstone; novaculite[obs]; steel, emery.

V. be sharp &c. adj.; taper to a point; bristle with.

render sharp &c. adj.; sharpen, point, aculeate, whet, barb, spiculate[obs], set, strop, grind; chip [flint].

cut &c. (sunder) 44.

Adj. sharp, keen; acute; acicular, aciform[obs]; aculeated[obs], acuminated[obs]; pointed; tapering; conical, pyramidal; mucronate[obs], mucronated[obs]; spindle shaped, needle shaped; spiked, spiky, ensiform[obs], peaked, salient; cusped, cuspidate, cuspidated[obs]; cornute[obs], cornuted[obs], cornicultate[obs]; prickly; spiny, spinous[obs], spicular; thorny, bristling, muricated[obs], pectinated[obs], studded, thistly, briary[obs]; craggy &c. (rough) 256; snaggy, digitated[obs], two-edged, fusiform[Microb]; dentiform[obs], denticulated; toothed; odontoid[obs]; starlike; stellated[obs], stelliform[obs]; sagittate[obs], sagittiform[obs]; arrowheaded[obs]; arrowy[obs], barbed, spurred.

acinaciform; apiculate[obs], apiculated[obs]; aristate[obs], awned, awny[obs], bearded, calamiform[obs], cone-shaped, coniform[obs], crestate[obs], echinate[obs], gladiate[obs]; lanceolate[obs], lanciform; awl, awl-shaped, lance-shaped, awl-shaped, scimitar-shaped, sword-shaped; setarious[obs], spinuliferous[obs], subulate[obs], tetrahedral, xiphoid[obs].

cutting; sharp edged, knife edged; sharp as a razor, keen as a razor; sharp as a needle, sharp as a tack; sharpened &c. v.; set