Also found in: Thesaurus, Idioms, Encyclopedia, Wikipedia.


adj. smooth·er, smooth·est
a. Having a surface free from irregularities, roughness, or projections; even. See Synonyms at level.
b. Free from waves or disturbances; calm: The lake is smooth today.
a. Free from hair, whiskers, or stubble: felt his smooth cheek after the close shave.
b. Having a short dense flat coat. Used of dogs.
a. Having a fine texture: a smooth fabric.
b. Having an even consistency: a smooth pudding.
c. Having an even or gentle motion or movement: a smooth ride.
4. Having no obstructions or difficulties: a smooth operation; a smooth trip.
5. Easy-going; serene: a smooth temperament.
6. Not sharp or bitter in taste: a smooth wine.
7. Delicately pleasing to the ear; not harsh or grating: a smooth voice.
8. Ingratiatingly polite and agreeable: known for his smooth remarks.
v. smoothed, smooth·ing, smoothes
1. To make (something) even, level, or unwrinkled: smoothed the fabric with an iron.
2. To rid of obstructions, hindrances, or difficulties: a real estate agent who smoothed the process of applying for a mortgage.
3. To soothe or tranquilize; make calm: The president tried to smooth over the hurt feelings of the disputing factions.
4. To cause to appear less harsh or severe than is the case: Don't try to smooth over their faults.
To become smooth.
1. The act of smoothing.
2. A smooth surface or part.

[Middle English smothe, from Old English smōth.]

smooth′er n.
smooth′ly adv.
smooth′ness n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


  1. (The syllables) flow like wind on water —T. Coraghessan Boyle
  2. Glib as an auctioneer —James Crumley
  3. Go down like milk and molasses —Russell Baker
  4. Goes down like chopped hay —John Ray’s Proverbs
  5. It [a drink] was about as smooth as a rusty hacksaw —Harold Adams
  6. (Cold,) polished as a marble column —Honoré de Balzac

    Balzac’s description deftly characterizes Gosbeck, the main character in a short novel by that name.

  7. Sleek and pretty as a new dime —Borden Deal

    See Also: BEAUTY

  8. (Her breasts protruded from the suds wet and) sleek as seals —Jean Thompson
  9. Slick as a button —American colloquialism

    Unlike “Smooth as glass” or “Smooth as alabaster” which usually describe texture, this generally applies to something easily done. Other widely used variations to describe a glib, shrewd person are “Slick as an eel” and “Slick as grease.”

  10. Slick as a cake of soap —Charles Wright
  11. Slick as a pig —R. Wright Campbell
  12. (Would make my life as) slick as a sonnet —Tallulah Bankhead
  13. Slick as spit —James Lee Burke
  14. Slick as a water snake —George Garrett
  15. [Wet streets] slick as black satin —Paige Mitchell
  16. Slick as black marble —Donald McCaig
  17. [An icy roof] slick as cake icing —Davis Grubb
  18. Slick as nail polish —Rosellen Brown
  19. Slick as snot —Jonathan Kellerman
  20. Slick as water —Terry Bisson
  21. (Her glasses were) slippery as icicles —Cynthia Ozick
  22. Smooth as a carpet —John Ray’s Proverbs

    Still widely used … or as one might say “Popular and enduring as a John Ray proverb.”

  23. Smooth as a kitten’s ear —Slogan, Hammond Cedar Company
  24. Smooth as a phantom —John Betjeman
  25. (His movement was as) smooth as a ripple of water —Raymond Chandler
  26. Smooth as a sage —Lawrence Durrell
  27. (Her mind, clear and as) smooth as a sea stone beaten by the waves and elements for a millenium —Charles Johnson
  28. Smooth as a suburbanized television professor —Harvey Swados
  29. Smooth as corn syrup —Helen Hudson
  30. (Her skin was as) smooth as glass —English ballad

    Probably one of the most frequently used “Smooth as” comparisons, with ‘slick’ and ‘smooth’ often used interchangeably, as in “The frozen lake was slick as a mirror,” found in Mark Helprin’s short story, Ellis Island.

  31. Smooth as marbles —Anon
  32. (Voice) smooth as mink oil —Linda Barnes
  33. Smooth as monumental alabaster —William Shakespeare
  34. Smooth as oil —William Shakespeare
  35. (The sea was) smooth as pewter plate —Mazo De La Roche
  36. Smooth as pine-nuts —Suzanne E. Berger
  37. (Works as) smooth as sand running through an hour glass —William Diehl
  38. (Glasses) smooth as sea-washed stones —Ann Beattie
  39. (Cheeks) smooth as silk —Juvenal

    Though first used to describe complexion, the simile was expanded to broader use by O. Henry when he wrote “Everything goes smooth as silk.”

  40. Smooth as skin in oil —Reynolds Price
  41. (The fellow was) smooth as soap —Jessamyn West
  42. (Skin) smooth as stones on the shore —Mary Morris
  43. Smooth as the inner lips of a shell —Sharon Olds

    The shell comparison is used by poet Olds to describe the reddened, sun-swollen lips of the author’s daughter.

  44. Smooth as the nose of a moth —Karl Shapiro
  45. Smooth as the road to ruin —Anon
  46. (He shrugged and rolled up his sleeves. Both forearms were as) unmarked as a baby’s bottom —Jonathan Valin
  47. Worn smooth and slick as a chewed bone —George Garrett
  48. Worn smooth as a tiger’s eye —Sharon Sheehe Stark
Similes Dictionary, 1st Edition. © 1988 The Gale Group, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.smoothness - a texture without roughness; smooth to the touch; "admiring the slim smoothness of her thighs"; "some artists prefer the smoothness of a board"
texture - the feel of a surface or a fabric; "the wall had a smooth texture"
silkiness, sleekness - the smooth feel of silk fabric
slick, slipperiness, slickness, slip - a slippery smoothness; "he could feel the slickness of the tiller"
powderiness, fineness - having a very fine texture; "the fineness of the sand on the beach"
burnish, glossiness, polish, gloss - the property of being smooth and shiny
raggedness, roughness - a texture of a surface or edge that is not smooth but is irregular and uneven
2.smoothness - powerful and effective language; "his eloquence attracted a large congregation"; "fluency in spoken and written English is essential"; "his oily smoothness concealed his guilt from the police"
expressive style, style - a way of expressing something (in language or art or music etc.) that is characteristic of a particular person or group of people or period; "all the reporters were expected to adopt the style of the newspaper"
3.smoothness - the quality of being bland and gracious or ingratiating in manner
graciousness - excellence of manners or social conduct
4.smoothness - the quality of having a level and even surface; "the water was a glassy smoothness"; "the weather system of the Pacific is determined by the uninterrupted smoothness of the ocean"
invariability, evenness - a quality of uniformity and lack of variation
5.smoothness - the quality of being free from errors or interruptions; "the five-speed manual gearbox is smoothness personified"
effortlessness - the quality of requiring little effort; "such effortlessness is achieved only after hours of practice"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.


1. evenness, regularity, levelness, flushness, unbrokenness The lawn was rich, weed-free, and trimmed to smoothness.
2. fluency, finish, flow, ease, polish, rhythm, efficiency, felicity, smooth running, slickness, effortlessness the strength and smoothness of his movements
3. ease, simplicity, straightforwardness, effortlessness, easiness the smoothness of the procedure
4. sleekness, softness, smooth texture, silkiness, velvetiness the smoothness of her skin
5. suavity, urbanity, oiliness, glibness, smarminess (Brit. informal) His cleverness, smoothness even, made his relationships uneasy.
Collins Thesaurus of the English Language – Complete and Unabridged 2nd Edition. 2002 © HarperCollins Publishers 1995, 2002
gnidningsløs afvikling
sléttleiki; mÿkt


[ˈsmuːðnɪs] N
1. [of hair] → suavidad f; [of skin] → suavidad f, tersura f
2. [of road, surface] → lo llano; [of stone] → lisura f
3. [of sea, lake] → tranquilidad f, calma f
4. [of paste, sauce] → homogeneidad f
5. [of landing] → la suavidad, lo suave; [of flight, crossing, journey] → lo poco accidentado
6. (= ease) [of transition, takeover] → lo poco conflictivo
7. [of flavour, whisky, cigar, voice, sound] → suavidad f
8. [of style, prose] → fluidez f
9. (pej) [of person, manners] → zalamería f
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005


[ˈsmuːðnɪs] n
[skin] → douceur f; [surface] → toucher m lissesmooth-running [ˈsmuːðrʌnɪŋ] adj [business, organization] → qui marche biensmooth-shaven [ˌsmuːðˈʃeivən] adjrasé(e) de prèssmooth-talking [ˈsmuːðtɔːkɪŋ] adjenjôleur/euse
Collins English/French Electronic Resource. © HarperCollins Publishers 2005


(of texture etc)Glätte f; (of sea)Ruhe f; (of road, surface)Ebenheit f; (of skin)Glätte f, → Weichheit f; it has the smoothness of silkes ist seidenweich
(in consistency) (of paste)Sämigkeit f; (of sauce)Glätte f
(of motion, flight, crossing)Ruhe f; (of gear change)Weichheit f; (of takeoff, landing)Sanftheit f; (of breathing, flow)Gleichmäßigkeit f; (of fit)Genauigkeit f
(= ease: of transition, functioning, relations) → Reibungslosigkeit f
(in taste, of whisky etc) → Weichheit f; (of coffee)Milde f
(of style of writing, diction)Flüssigkeit f; (of tones)Sanftheit f
(pej, of manners, salesman) → Glätte f; (of person)(aal)glatte Art (pej)
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007


[ˈsmuːðnɪs] n (of stone, wood) → levigatezza; (of skin) → morbidezza; (of sauce) → omogeneità; (of sea) → calma; (of trip, life) → tranquillità; (of manner) → mellifluità
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995


(smuːð) adjective
1. having an even surface; not rough. Her skin is as smooth as satin.
2. without lumps. Mix the ingredients to a smooth paste.
3. (of movement) without breaks, stops or jolts. Did you have a smooth flight from New York?
4. without problems or difficulties. a smooth journey; His progress towards promotion was smooth and rapid.
5. (too) agreeable and pleasant in manner etc. I don't trust those smooth salesmen.
1. (often with down, ~out etc) to make (something) smooth or flat. She tried to smooth the creases out.
2. (with into or over). to rub (a liquid substance etc) gently over (a surface): Smooth the moisturizing cream into/over your face and neck.
ˈsmoothen verb
to make smooth.
ˈsmoothly adverb
The plane landed smoothly; The meeting went very smoothly.
ˈsmoothness noun
Kernerman English Multilingual Dictionary © 2006-2013 K Dictionaries Ltd.
References in classic literature ?
France, less favoured on the whole as to matters spiritual than her sister of the shield and trident, rolled with exceeding smoothness down hill, making paper money and spending it.
"It was he," says Scott, "who first showed that the English language was capable of uniting smoothness and strength." But when you come to read Dryden's poems you may perhaps feel that in gaining the smoothness of Art they have lost something of the beauty of Nature.
She stole glances at the smoothness of his face, and the essential boyishness of him, so much desired, shocked her.
He had fallen with a pleasant ease and smoothness into the rather curious life lived at Elizabeth Boyd's bee-farm.
I soon learnt that the object of our expedition was to fill our sacks with cocoanuts, but when at length I saw the trees and noted their immense height and the slippery smoothness of their slender trunks, I did not at all understand how we were to do it.
Long thatched sheds stretched round the enclosure, their slopes encrusted with vivid green moss, and their eaves supported by wooden posts rubbed to a glossy smoothness by the flanks of infinite cows and calves of bygone years, now passed to an oblivion almost inconceivable in its profundity.
It was only from feeling himself nearer the ground and from the peculiar smoothness of his motion that Vronsky knew how greatly the mare had quickened her pace.
So I fixed that as good as I could from the outside by scattering dust on the place, which covered up the smoothness and the sawdust.
It was all general approbation and smoothness; nothing delineated or distinguished.
He took up all my clothes in his pastern, one piece after another, and examined them diligently; he then stroked my body very gently, and looked round me several times; after which, he said, it was plain I must be a perfect YAHOO; but that I differed very much from the rest of my species in the softness, whiteness, and smoothness of my skin; my want of hair in several parts of my body; the shape and shortness of my claws behind and before; and my affectation of walking continually on my two hinder feet.
But on this occasion the precaution was superfluous, and everything proceeded with the utmost smoothness and politeness.
Rarity and density, roughness and smoothness, seem to be terms indicating quality: yet these, it would appear, really belong to a class different from that of quality.