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

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

255. Smoothness.

   NOUN:SMOOTHNESS &c. adj.; polish, gloss; lubricity, lubrication.
  [SMOOTH SURFACES] bowling green (level) [See Horizontality]; glass, ice, slide; asphalt, granolithic pavement, wood pavement, flags; down, velvet, silk, taffeta, satin, velveteen, velumen.
  SMOOTHER; roller, steam roller; sandpaper, emery paper; flatiron, sadiron; burnisher, chamois or shammy, turpentine and beeswax.
   VERB:SMOOTH, smoothen [rare]; plane; file; mow, shave; level, roll; macadamize; polish, burnish, sleek, planish, levigate, calender, glaze; iron, hot-press, mangle; lubricate (oil) [See Lubrication].
   ADJECTIVE:SMOOTH; polished &c. v.; leiodermatous, slick [colloq.], velutinous; even; level [See Horizontality]; plane (flat) [See Flatness]; sleek, glossy; silken, silky; lanate, downy, velvety; glabrous, slippery, glassy, lubricous, oily, soft; unwrinkled; smooth as -glass, – ice, – monumental alabaster, – ivory, – satin, – velvet, – oil; slippery as an eel; woolly (feathery) [See Roughness].