Mawson, C.O.S., ed. (1870–1938). Roget’s International Thesaurus. 1922.

Class II. Words Relating to Space
Section III. Form
3. Superficial Form

253. Sharpness.

   NOUN:SHARPNESS &c. adj.; acuity, acumination, mucronation; spinosity.
  POINT, spike, spine, spiculum; needle, pin; prick, prickle; spur, rowel, barb; spit, cusp; horn, antler; snag; tag; thorn, bristle; Adam’s needle, bear grass [U. S.], tine, yucca.
  nib, tooth, tusk; spoke, cog, ratchet.
  beard, cheval-de-frise (pl. chevaux-de-frise), porcupine, hedgehog, brier, bramble, thistle; comb; awn, beggar’s lice, bur or burr, catchweed, cleavers or clivers, goose grass, hairif or hariff [dial. Eng.], flax comb, hatchel or hackle or heckle.
  PEAK, crag, crest, arête [F.], cone, sugar loaf, pike, aiguille; spire, pyramid, steeple.
  CUTTING-EDGE, knife-edge, blade, edge tool, cutlery, knife, penknife, whittle, razor; scalpel, bistoury, lancet; plowshare, colter; hatchet, ax or axe, pickax, mattock, pick, adz or adze, bill; billhook, cleaver, cutter; scythe, sickle, scissors, shears; sword (arms) [See Arms]; wedge; bodkin (perforator) [See Perforator]; belduque [F.], bowie knife, paring knife; bushwhacker [U. S.]; drawing knife or drawknife, drawshave.
  SHARPENER, hone, strop; grindstone, whetstone; novaculite; steel, emery.
   VERB:BE SHARP &c. adj.; taper to a point; bristle with, acuminate.
  RENDER SHARP &c. adj.; sharpen, point, aculeate, acuminate, whet, barb, spiculate, set, strop, grind.
  CUT (sunder) [See Disjunction].
   ADJECTIVE:SHARP, keen; acute; acicular, aciform; aculeate or aculeated, acuminate or acuminated, pointed; tapering; mucronate or mucronated, mucronulate; spiked, spiky, peaked, salient; cusped, cuspidate or cuspidated; prickly, echinate or echinated, acanaceous, acanthophorous, spiny, spinous, spinulose, spinulescent, spinuliferous; apiculate or apiculated; thorny, bristling, muricate or muricated, corniculate, pectinate or pectinated, studded, thistly, briery; craggy (rough) [See Roughness]; snaggy, digitate or digitated, two-edged.
  ARROW-SHAPED, arrowheaded, arrowy, sagittal, sagittate, sagittated, sagittiform.
  BARBED, glochidiate, spurred, aristate, awned, awny, bearded, barbate, crestate, setarious, subulate, tetrahedral.
  CONE-SHAPED, conic, conical, coniform [rare], pyramidal.
  HORN-SHAPED, corniform, cornute or cornuted; crescent-shaped; horned, corniculate.
  LANCE-SHAPED, lanceolate, lanciform.
  REED-SHAPED, calamiform [rare], arundinaceous, reedy.
  SCIMITAR-SHAPED, acinaciform.
  SPEAR-SHAPED, hastate, hastiform [rare], lance-shaped (q. v.).
  SPINDLE-SHAPED, fusiform.
  STAR-SHAPED, stellate or stellated, stelliform, stellular, starlike, starry.
  SWORD-SHAPED, gladiate, ensate, ensiform, xiphoid.
  TOOTH-SHAPED, dentiform, toothlike, odontoid, dentoid.
  KEEN-EDGED, cutting; sharp-edged, knife-edged; sharp -, keen- as a razor; sharp as a needle; sharpened &c. v.; set.