\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

Synonyms & Antonyms for smooth

Synonyms: Adjective

debonair, sophisticated, suave, svelte, urbane

Synonyms: Verb

ease, facilitate, grease, loosen (up), unclog

Antonyms: Adjective

boorish, churlish, classless, clownish, loutish, uncouth

Antonyms: Verb


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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

Converting those shares is actually a key part of its plan for a smooth transition back to fully public. Evan Horowitz,, "Public, private, now public again. Dell’s dance with investors makes sense," 2 July 2018 Right now, the most important thing for the future of the roster is to arrive at a decision that sets the stage for a smooth transition to whatever lies next. David Murphy,, "Sixers need to get Bryan Colangelo decision right as draft looms | David Murphy," 3 June 2018 While Meghan seems to be adjusting well to the early stages of pregnancy, her sister-in-law, Kate Middleton, didn’t have quite such a smooth ride. Lucy Wood, Marie Claire, "Meghan Markle Has Revealed The First Side Effects of Her Pregnancy," 19 Oct. 2018 Party in the front, work in the back Once out on the road, the Laramie's smooth ride matched its interior swank. Sean Gallagher, Ars Technica, "The RAM 1500 Laramie Crew Cab fuses “luxury” and “pickup truck”," 21 Aug. 2018 Tesla's forthcoming electric pickup truck will have standard four-wheel-drive and a high-tech suspension that enables a smooth ride, CEO Elon Musk promised Tuesday. Nathan Bomey, USA TODAY, "Tesla CEO Elon Musk: Electric pickup truck will have 'crazy' features," 26 June 2018 In a region known for its soul-crushing gridlock and delay-prone rail system, the 80-year-old Route 495 viaduct connecting the New Jersey Turnpike to the tunnel is where smooth rides come to die daily for more than 150,000 motorists. Washington Post, "Major New York-area traffic bottleneck about to get worse," 23 June 2018 The Renovo John Day road bike, built of ash, bubinga, birch and walnut woods, has rave reviews for its smooth ride and stunning looks. Roy M. Wallack,, "Summer is calling: Fitness gear to get you outdoors – and moving," 5 July 2018 Our tester had a fairly smooth ride even on some slightly rough (potholed) roads, and the cabin was generally quiet. G. Chambers Williams Iii, Houston Chronicle, "Hyundai’s 2018 Ioniq Hybrid has starting price of $22,200," 1 July 2018

Recent Examples on the Web: Verb

Today’s AAA video games are polished to perfection, their rough edges largely smoothed away. Andrew Webster, The Verge, "PlayStation Classic review: a journey through the exciting, awkward days of early 3D games," 27 Nov. 2018 Bright and herby smashed chickpeas get spooned on garlicky toast that’s been smoothed with harissa yogurt to make the perfect vegetarian tartine. Molly Baz, Bon Appetit, "Smashed Chickpeas on Toast with Harissa Yogurt," 28 May 2018 Splash News Usually, the conversation around celebrities and Photoshop fails is totally their own fault, and probably involves some slimming down, smoothing over, and a few embarrassing mistakes. Lucy Wood, Marie Claire, "Katie Holmes and Suri Cruise Were Accidentally Used to Advertise a Café in London," 30 Oct. 2018 The beauty world has come up with a solution: eye masks soaked in serum that promise to brighten our undereyes, smooth any fine lines, and deflate puffy bags in 20 minutes flat. Rachel Nussbaum, Glamour, "11 Eye Patches That’ll Make Monday Mornings Look a Little Less Rough," 29 Oct. 2018 Here are some products that smooth and exfoliate better than basic lotion alone, for those looking to put in a little more work from the neck down. Hallie Gould, The Seattle Times, "6 top products for smooth summer skin," 26 July 2018 Shampoo containing this acid will help to smooth the cuticle and add moisture back into your strands without stripping away any natural oils. Kara Thompson, Town & Country, "All the Ways Apple Cider Vinegar is Great for Damaged Hair," 24 Apr. 2018 With every clamp, the internal reservoir releases a hydrating steam infused with conditioning oils that smooth unruly strands and add shine for a silky (not greasy) finish. Harper's Bazaar Staff, Harper's BAZAAR, "The Best Flatirons for Every Type of Hair," 2 Apr. 2018 Use Ampro's Shine 'n Jam Silk Edges to smooth your edges and define each part. Stasha Harris, Cosmopolitan, "Prepare to Be Obsessed With This Gorgeous Bejeweled Fro," 8 Mar. 2018

Recent Examples on the Web: Noun

This Japanese rice bran powder, long used by the women of Kyoto as a face wash, brightens, smooths, and evens the skin. Zoe Ruffner, Vogue, "The Best Beauty Gifts Under $100 to Give Everyone on Your List," 19 Nov. 2018 Games were super-smooth, although no iOS games really offer Xbox One-quality graphics. Nilay Patel, The Verge, "Apple iPad Pro review 2018: the fastest iPad is still an iPad," 5 Nov. 2018 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

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

4 Dec 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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More from Merriam-Webster on smooth

Rhyming Dictionary: Words that rhyme with smooth

Thesaurus: All synonyms and antonyms for smooth

Spanish Central: Translation of smooth

Nglish: Translation of smooth for Spanish Speakers

Britannica English: Translation of smooth for Arabic Speakers

Comments on smooth

What made you want to look up smooth? Please tell us where you read or heard it (including the quote, if possible).


living or existing for a long time

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