Nearby words

  1. smolt,
  2. smooch,
  3. smoochy,
  4. smoodge,
  5. smoosh,
  6. smooth as silk,
  7. smooth breathing,
  8. smooth collie,
  9. smooth diet,
  10. smooth dogfish

Origin of smooth

before 1050; (adj.) Middle English smothe, late Old English smōth; compare Middle English smethe, Old English smēthe smooth; cognate with Old Saxon smōthi; (v.) late Middle English smothen, derivative of the adj.; replacing Middle English smethen, Old English smēth(i)an

Related forms Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for smooth

British Dictionary definitions for smooth



resting in the same plane; without bends or irregularities
silky to the touchsmooth velvet
lacking roughness of surface; flat
tranquil or unruffledsmooth temper
lacking obstructions or difficulties
  1. suave or persuasive, esp as suggestive of insincerity
  2. (in combination)smooth-tongued
(of the skin) free from hair
of uniform consistencysmooth batter
not erratic; free from joltssmooth driving
not harsh or astringenta smooth wine
having all projections worn awaysmooth tyres
maths (of a curve) differentiable at every point
phonetics without preliminary or simultaneous aspiration
gentle to the ear; flowing
physics (of a plane, surface, etc) regarded as being frictionless


in a calm or even manner; smoothly

verb (mainly tr)

(also intr often foll by down) to make or become flattened or without roughness or obstructions
(often foll by out or away) to take or rub (away) in order to make smoothshe smoothed out the creases in her dress
to make calm; soothe
to make easiersmooth his path
electrical engineering to remove alternating current ripple from the output of a direct current power supply
obsolete to make more polished or refined


the smooth part of something
the act of smoothing
tennis squash badminton the side of a racket on which the binding strings form a continuous lineCompare rough (def. 27)
See also smooth over

Derived Formssmoothable, adjectivesmoother, nounsmoothly, adverbsmoothness, noun

Word Origin for smooth

Old English smōth; related to Old Saxon māthmundi gentle-minded, smōthi smooth

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for smooth
Online Etymology Dictionary, © 2010 Douglas Harper

Idioms and Phrases with smooth


In addition to the idioms beginning with smooth

  • smooth as silk
  • smooth over
  • smooth sailing

also see:

  • take the rough with the smooth
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.