smooth, v. [level], plane, [sleek], flatten, planish, levigate; facilitate, pave.
smooth, a. [even], [plain], [flat], [level], abraded, levigated, [slippery], [sleek], glary; unruffled, placid; [voluble], [fluent]; [suave], [oily], [bland], insinuating, [flattering], smooth-tongued. Antonyms: [rough], [abrupt].
smoothfaced, a. beardless, [smockfaced].
smoothness, n. [evenness], levelness, sleekness; volubility, fluency; [suavity].
smooth over. [palliate], gloze, extenuate, [mitigate].
smooth-spoken, a. smooth-tongued, adulatory, [plausible], [glib]. Antonyms: brusque, [abrupt].
smother, v. [suffocate], stifle; extinguish, [repress], [suppress]; smolder.
smuggler, n. contrabandist.
smut, n. scot, [dirt], smutch; [mildew], [blight]; [obscenity], [lewdness], [ribaldry].