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smooth Meaning & Definition

ˈsmüt͟h

What Does Smooth Mean?

Smooth is an adjective that means having a continuous even surface. It is also used to mean being the representation of a function with a continuous first derivative. As a verb, it means to make smooth. As a noun, it means a smooth part.

Quick Facts About Smooth

Part of speechadjective, verb, noun
Pronunciation/ˈsmüt͟h/
Syllables1
Synonymssleek, suave and undulate
Antonymsrough, disconnected and staccato
Pluralsmooths
Comparative / superlativesmoother, smoothest
Verb formssmooths, smoothing, smoothed

Smooth Definition (Adjective)

  1. having a continuous even surface
  2. being the representation of a function with a continuous first derivative
  3. having or being a short even coat of hair compare rough, wirehaired

    a smooth collie

  4. being without hair
  5. glabrous

    a smooth leaf

  6. causing no resistance to sliding
  7. free from difficulties or impediments

    the smooth course of his life

  8. even and uninterrupted in flow or flight
  9. excessively and often artfully suave : ingratiating:1

    a smooth operator

  10. serene, equable

    a smooth disposition

  11. amiable, courteous
  12. not sharp or harsh

    a smooth sherry

  13. free from lumps

Smooth as a Verb

  1. to make smooth
  2. to free from what is harsh or disagreeable : polish

    smoothed out his style

  3. soothe
  4. to minimize (something, such as a fault) especially in order to allay anger or ill will

    His main job is to smooth over the friction that so often arises …

  5. to free from obstruction or difficulty

    conciliation smoothed the way to an agreement

  6. to press flat

    smoothed down the folds of her dress

  7. to remove expression from (one's face) : compose
  8. to cause to lie evenly and in order : preen

    a bird smoothing its feathers

  9. to free (a graph, a collection of data, etc.) from irregularities
  10. to become smooth

Smooth as a Noun

  1. a smooth part
  2. the act of smoothing
  3. a smoothing implement

Synonyms of Smooth

Smooth synonyms and antonyms →

Antonyms of Smooth

Smooth in a Sentence

We hope for a smooth transition to the new system.

smooth-running, smooth-tongued, smooth-spoken

The paths true love never ran smooth(ly).

to smooth cloth with a smoothing iron

to smooth a person's temper

Can I smooth your cat?

a smooth collie

a smooth leaf

the smooth course of his life

a smooth operator

a smooth disposition

a smooth sherry

smoothed out his style

His main job is to smooth over the friction that so often arises …

conciliation smoothed the way to an agreement

smoothed down the folds of her dress

a bird smoothing its feathers

a smooth salesman of expensive jewelry

it should be smooth going from this point on

a smooth skating rink

his smooth disposition and leadership qualities lend themselves well to the position

a willingness to compromise will smooth the way to an early agreement

the workers smoothed the surface of the concrete before letting it dry

used fine sandpaper to smooth the face of the wood

Word Forms & Grammar

smooth adverb

smooth·ly adverb

smooth·ness noun

smooth

smoother

smoothest

smoothly

smoothness

smoothnesses

smoothed

smooth·ing

smooths

smoothes

smooth·er noun

smoothers

smoothing

smooth (comparative smoother, superlative smoothest)

smooth (plural smooths)

smooth (third-person singular simple present smooths, present participle smoothing, simple past and past participle smoothed)

Words That Rhyme With Smooth

Origin of Smooth

Origin 1: Middle English smothe, from Old English smōth; akin to Old Saxon smōthi smooth

Origin 2: From Middle English smothe, smethe, from Old English smēþe, smōþ, both from Proto-West Germanic *smanþī, of unknown origin. Cognate with Scots smuith (“smooth”), Saterland Frisian smoud (“smooth”), Low German smood and smödig (“smooth, malleable, ductile”), Dutch smeuïg (“smooth”) (from earlier smeudig).

First Known Use

before 12th century

15th centuryt

15th century

How to Pronounce Smooth

You say smooth as /ˈsmüt͟h/. It has 1 syllable.

Frequently Asked Questions About Smooth

Is smooth an adjective or a verb?

Smooth is mainly used as an adjective, but it can also be used as a verb and a noun.

What is another word for smooth?

Close synonyms of smooth are sleek, suave and undulate. See the full list of smooth synonyms and antonyms.

What is the opposite of smooth?

The opposite of smooth can be expressed with words like rough, disconnected, staccato and unsmooth.

What is the plural of smooth?

The plural of smooth is smooths.

What is the past tense of smooth?

The past tense of smooth is smoothed. The present participle is smoothing.

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