I. adjective
1.
Synonyms: level , even, flat, flush, planate, plane
Related Word: glossy, sleek, slick; rippleless, unbroken, unwrinkled
Contrasted words: harsh, rugged, scabrous, uneven
Antonyms: rough
2.
Synonyms: hairless , bald, glabrous
3.
Synonyms: easy 9, cursive, effortless, flowing, fluent, running
4.
Synonyms: easy 1, effortless, facile, light, royal, simple, untroublesome
Related Word: smooth-running
Idioms: smooth and easy
Antonyms: labored
5.
Synonyms: suave , bland, civilized, urbane
Related Word: courteous, courtly, polite; smooth-faced, smooth-tongued
Contrasted words: bluff, blunt, brusque, crusty, curt, gruff, harsh
6.
Synonyms: gentle 1, balmy, bland, faint, lenient, mild, soft
Related Word: agreeable, soothing
II. verb
1.
Synonyms: even 1, flatten, flush, lay, level, plane, smoothen
Contrasted words: corrugate; roughen; wrinkle
Antonyms: unsmooth
2.
Synonyms: polish 2, perfect, refine, round, sleek, slick
III. adverb
Synonyms: evenly 3, flatly, smoothly, uniformly