\ˈsmüt͟h \

Definition of smooth 

(Entry 1 of 3)

1a(1) : having a continuous even surface

(2) of a curve : being the representation of a function with a continuous first derivative

(3) : having or being a short even coat of hair a smooth collie — compare rough, wirehaired

b : being without hair

c : glabrous a smooth leaf

d : causing no resistance to sliding

2 : free from difficulties or impediments the smooth course of his life

3 : even and uninterrupted in flow or flight

4 : excessively and often artfully suave : ingratiating a smooth operator

5a : serene, equable a smooth disposition

b : amiable, courteous

6a : not sharp or harsh a smooth sherry

b : free from lumps


smoothed; smoothing; smooths also smoothes

Definition of smooth (Entry 2 of 3)

transitive verb

1 : to make smooth

2a : to free from what is harsh or disagreeable : polish smoothed out his style

b : soothe

3 : 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— Brian Crozier

4 : to free from obstruction or difficulty conciliation smoothed the way to an agreement

5a : to press flat smoothed down the folds of her dress

b : to remove expression from (one's face) : compose

6 : to cause to lie evenly and in order : preen a bird smoothing its feathers

7 : to free (a graph, a collection of data, etc.) from irregularities

intransitive verb

: to become smooth



Definition of smooth (Entry 3 of 3)

1 : a smooth part

2 : the act of smoothing

3 : a smoothing implement

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Other Words from smooth


smooth adverb
smoothly adverb
smoothness noun


smoother noun

Choose the Right Synonym for smooth


level, flat, plane, even, smooth mean having a surface without bends, curves, or irregularities. level applies to a horizontal surface that lies on a line parallel with the horizon. the vast prairies are nearly level flat applies to a surface devoid of noticeable curvatures, prominences, or depressions. the work surface must be flat plane applies to any real or imaginary flat surface in which a straight line between any two points on it lies wholly within that surface. the plane sides of a crystal even applies to a surface that is noticeably flat or level or to a line that is observably straight. trim the hedge so it is even smooth applies especially to a polished surface free of irregularities. a smooth skating rink

easy, facile, simple, light, effortless, smooth mean not demanding effort or involving difficulty. easy is applicable either to persons or things imposing tasks or to activity required by such tasks. an easy college course facile often adds to easy the connotation of undue haste or shallowness. facile answers to complex questions simple stresses ease in understanding or dealing with because complication is absent. a simple problem in arithmetic light stresses freedom from what is burdensome. a light teaching load effortless stresses the appearance of ease and usually implies the prior attainment of artistry or expertness. moving with effortless grace smooth stresses the absence or removal of all difficulties, hardships, or obstacles. a smooth ride

suave, urbane, diplomatic, bland, smooth, politic mean pleasantly tactful and well-mannered. suave suggests a specific ability to deal with others easily and without friction. a suave public relations coordinator urbane implies high cultivation and poise coming from wide social experience. an urbane traveler diplomatic stresses an ability to deal with ticklish situations tactfully. a diplomatic negotiator bland emphasizes mildness of manner and absence of irritating qualities. a bland master of ceremonies smooth suggests often a deliberately assumed suavity. a smooth salesman politic implies shrewd as well as tactful and suave handling of people. a cunningly politic manager

Examples of smooth in a Sentence


They groomed the ski trail so it was smooth. The river rocks had been worn smooth by the water. Whisk the flour into the gravy until it is smooth. The milkshake was smooth and creamy. With the aid of observers, the election process was a smooth one. Our trip was smooth and uneventful. the smooth movements of a swimmer She has a nice, smooth golf swing. His new car has a smooth ride. Our flight was very smooth.


He smoothed his tie and headed out the door. The coin's date had been smoothed away over time. Smooth the cream on after your shower. Smooth the wax over the wood before polishing. She smoothed on some moisturizer before she put on her makeup. He smoothed ointment over the cut.
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Recent Examples on the Web: Adjective

The Jetta’s steering is firm and precise, perfectly in tune with a suspension that combines a smooth ride with responsive handling. Mark Phelan, Detroit Free Press, "Review: 2019 Jetta is Volkswagen’s best compact sedan," 12 July 2018 The project includes removing the top layers of old pavement and applying an overlay of high quality rubberized asphalt that will add durability to the roadway and create a smoother ride for motorists, reported Caltrans. Ramona Sentinel, "Caltrans begins $11M repairs on Route 78," 11 July 2018 That’s getting to be a big enough sample size to conclude the SS Rebuild is finding smooth waters. Paul Daugherty,, "Morning Line: Baseball is all about adjusting. So, adjust to the adjustment.," 10 July 2018 Set at 75%, this smooth drinking spirit is no laughing matter. Michael Bartiromo, Fox News, "Liquor company slammed for releasing 'Novichok' vodka named after deadly nerve agent," 10 July 2018 And the path to success can be smoother in the roughly one-third of the U.S. that is not bound to an IOU. Justin Worland/pueblo, Time, "How One Industrial City Is Fighting to Go Green," 12 July 2018 Despite their relaxing beach day, the pair’s Hamptons vacation hasn’t been all smooth. Stephanie Petit,, "Justin Bieber and Hailey Baldwin Continue Their Hamptons Getaway with a Beach Trip," 4 July 2018 The coldest spots were in shallow depressions in the ice, little hollows where the surface isn’t perfectly smooth. National Geographic, "Coldest Place on Earth Found—Here's How," 27 June 2018 McCauley’s landing was so smooth that those in the back didn’t know the plane had touched ground. Sarah Wu, The Seattle Times, "World War II aircraft soar into Seattle," 23 June 2018

Recent Examples on the Web: Verb

Barrett was the right pick if Trump's top priority was smoothing the politics of overturning Roe. Jeet Heer, The New Republic, "If Democrats want to fight Brett Kavanaugh, they have a lot of ammunition.," 10 July 2018 The Multi-mode Extreme Travel Suspension (METS) system protects troops from a rough ride, smoothing it out so that soldiers aren’t fatigued by a difficult cross-country trip. Kyle Mizokami, Popular Mechanics, "DARPA Invents Wheels That Instantly Morph Into Triangular Tank Tracks," 25 June 2018 Yet for the hands that gently smooth them out over the table top, each one bears a name and holds a piece of a story that nobody knows, but that someone, somewhere is desperate to hear. Washington Post, "Team studies bones to identify the disappeared in Mexico," 5 June 2018 Yet for the hands that gently smooth them out over the table top, each one bears a name and holds a piece of a story that nobody knows, but that someone, somewhere is desperate to hear. Maria Verza, Fox News, "Team studies bones to identify the disappeared in Mexico," 4 June 2018 Yet for the hands that gently smooth them out over the table top, each one bears a name and holds a piece of a story that nobody knows, but that someone, somewhere is desperate to hear. Maria Verza, The Christian Science Monitor, "Forensic experts search for Mexico's missing," 4 June 2018 And that jet disturbed the sharp boundary between the two layers of water in the tank, smoothing it out into a gradual transition. John Timmer, Ars Technica, "Tiny krill appear to mix up the ocean," 20 Apr. 2018 To San Francisco cyclists, the blocks that ripple out from the downtown Caltrain station at Fourth and Townsend streets are a galling illustration of the city’s inability to smooth their path and protect them. Rachel Swan,, "Bicyclists protest as city plans for safer lanes hit bumps," 13 July 2018 Known for its ingestible adaptogens (super-power plants said to boost mood and fight inflammation), this California company’s beauty products employ the power of mushrooms to smooth and plump skin. Olivia Hall, The Seattle Times, "Overstressed? 15 wellness trends to help you relax," 3 July 2018

Recent Examples on the Web: Noun

That good ol' magnolia oil smooths and softens, giving the formula an almost balm-like feel. Melanie Rud Chadwick, Allure, "Introducing Ever Makeup, the Clean Cosmetics Line Brand From Ever Skin," 3 Mar. 2018 The Boston cream pairs a silky smooth filling with a rich chocolate icing. Dominic Armato, azcentral, "10 best donuts in Phoenix: I tried 400, sorry Dunkin' Donuts, you didn't make the cut," 30 May 2018 Whether worn alone or layered with a full face of makeup, a featherweight and fast-absorbing formula that goes on smooth, free of a chalky residue, is vital. Jenna Rennert, Vogue, "10 New Sunscreens Worth Stocking Up On This Memorial Day Weekend," 22 May 2018 His delivery is unique with the leg lift but smooth. Jeff Sanders,, "Talking with ... Mark Prior, Padres pitching coordinator," 25 Aug. 2017 The track’s production is silky smooth as Khalid effortlessly flows along with his crisp vocals. Mackenzie Cummings-grady, Billboard, "Khalid Tells Croons His Way to a Lover In Steamy New Song 'OTW': Listen," 20 Apr. 2018 Some of his inquisitors appeared annoyed by Mr Zuckerberg’s rehearsed responses, but that did not stop many onlookers from being chuffed by his smooth, slightly robotic, performance. The Economist, "If Facebook will not fix itself, will Congress?," 11 Apr. 2018 Easterbrook, the author of several books, often airbrushes or smooths over history; temporary reversals are missed or their consequences minimized. Angus Deaton, New York Times, "Getting Better All the Time?," 2 Mar. 2018 With the addition of a 10-speed transmission, drivers and passengers will experience a smooth and controlled ride with impressive power. Drew Dorian, Car and Driver, "2018 Mercedes-Benz C-class Coupe and Cabriolet," 23 Feb. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'smooth.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of smooth


before the 12th century, in the meaning defined at sense 1a(1)


15th century, in the meaning defined at transitive sense 1


15th century, in the meaning defined at sense 1

History and Etymology for smooth


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

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Statistics for smooth

Last Updated

9 Oct 2018

Look-up Popularity

Time Traveler for smooth

The first known use of smooth was before the 12th century

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More Definitions for smooth



English Language Learners Definition of smooth

 (Entry 1 of 2)

: having a flat, even surface : not rough : not having any bumps, ridges, or uneven parts

of a liquid mixture : not having any lumps : mixed together so there are no lumps

: happening or done without any problems



English Language Learners Definition of smooth (Entry 2 of 2)

: to make (something) smooth

: to remove problems or difficulties from a situation

: to spread (something) over a surface (such as your skin) : to apply (something) by rubbing it on a surface


\ˈsmüt͟h \
smoother; smoothest

Kids Definition of smooth

 (Entry 1 of 2)

1 : not rough or uneven in surface a smooth board

2 : not hairy a smooth face

3 : free from difficulties or things in the way a smooth path a smooth journey

4 : moving or progressing without breaks, sudden changes, or shifts a smooth stream smooth speech

5 : appearing to be friendly and flattering without really meaning it a smooth talker

Other Words from smooth

smoothly adverb
smoothness noun


smoothed; smoothing

Kids Definition of smooth (Entry 2 of 2)

1 : to remove bumps, lumps, or wrinkles : make smooth

2 : to free from trouble or difficulty Pioneers smoothed the way for us.


\ˈsmüt͟h \

Medical Definition of smooth 

: forming or being a colony with a flat shiny surface usually made up of organisms that form no chains or filaments, show characteristic internal changes, and tend toward marked increase in capsule formation and virulence used of dissociated strains of bacteria — compare rough

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Comments on smooth

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lying above or upon

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