\ ˈsmüt͟h How to pronounce smooth (audio) \

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
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

This slim, minimalist add-on snaps onto almost any smartphone and instantly adds a comfy, non-slip grip to make your snapshots smoother and easier to control — like a DSLR. NBC News, "Step up your Instagram game this summer with these accessories," 9 Aug. 2019 His voice has grown huskier, but up close, his face is as smooth as an ironed sheet. Rob Tannenbaum, New York Times, "Barry Manilow Just Wanted to Write the Songs. He’s Still Singing Them.," 5 Aug. 2019 Peter and Stefanie, along with their middle sister, Ursula, who lives in New York City, worked together to make Irmhild’s cross-country move from Cambridge, Mass., as smooth as possible. Cassandra Landry,, "Tiny home in Oakland a perfect fit for grandmother," 31 July 2019 There wasn't much organization at the gates either, just clusters of people slowly filing in; with actual lines and order, the entry process probably would have been smoother. Piet Levy, Milwaukee Journal Sentinel, "Jimmy Buffett fans blast Alpine Valley Music Theatre for huge crowds, long lines, sound issues," 22 July 2019 Doing some preliminary research will make the process that much smoother. Haley Littleton, Outside Online, "How to Score Deep Discounts at Demo Sales," 24 July 2019 The $95,000 in countywide grants awarded earlier this year included mobile data computers for 33 fire engines in rural San Diego County and detailed map books to reduce response times and help make evacuations smoother. Linda Mcintosh, San Diego Union-Tribune, "Fire agencies receive $146,000 in grants," 24 July 2019 This makes the rental process much smoother than with some companies; Blacksford meets you at the gate and walks you to the RV. Megan Barber, Curbed, "Take a van life vacation in a Winnebago Revel," 23 July 2019 The Cowboys will break in a new quarterback this fall, so having a reliable pass-catcher like Wallace should make the transition smoother. The Si Staff,, "Top 100 College Football Players of 2019: Nos. 50–26," 10 July 2019

Recent Examples on the Web: Verb

Dry body brushing is said to energize the body, increases circulation and blood flow, and stimulates drainage from the lymphatic system to smooth skin's surface, sweep away flakes and dry patches, and even out lumps and bumps, including cellulite. April Franzino, Good Housekeeping, "What Is "Dry Brushing" and Can It Really Cure Cellulite?," 31 July 2019 Then, after meeting with China’s top leader, Xi Jinping, in Japan last month, President Trump said the administration would permit more US sales to Huawei, in a gesture meant to smooth the path toward a trade deal. Raymond Zhong,, "Huawei’s sales jump, despite Trump’s blacklisting," 30 July 2019 Then, after meeting with China’s top leader, Xi Jinping, in Japan last month, President Trump said the administration would permit more American sales to Huawei, in a gesture meant to smooth the path toward a trade deal. Raymond Zhong, New York Times, "Huawei’s Sales Jump Despite Trump’s Blacklisting," 30 July 2019 But harnessing them will require governments to implement policies to smooth the short-term disruptive consequences and avoid backlash. Carl Benedikt Frey For Cnn Business Perspectives, CNN, "The robot revolution is here. Prepare for workers to revolt," 26 July 2019 Pure Biology Total Eye Cream Made with hyaluronic acid, vitamins C and E, and natural extracts, this anti-aging eye cream works to smooth fine lines and tighten skin for a younger, brighter look. Claudia Fisher,, "8 Anti-Aging Eye Creams on Sale for Prime Day That Are Too Good to Miss," 15 July 2019 To achieve this, the budget sought to smooth the rough edges of some embattled sectors: Aviation: India’s airlines are reeling from high fuel prices, and rising cost of airport operations. Pramod Mathew, Quartz India, "In a quest to remain fiscally prudent, India’s budget stuck to the minimum," 6 July 2019 Because the car can drive in fully electric mode or on gas power, the engineers had to smooth the transition from one to the other. Alex Davies, WIRED, "Bentley's New Hybrid Hides Its Luxury From the Masses," 2 July 2019 During her pregnancy last year, Kardashian gave a shout-out to Hatch Mama Belly Oil, a hydrating body oil that's formulated to smooth stretch marks. Leah Prinzivalli, Allure, "Hatch’s Fan-Favorite Belly Oil Is Back in Stock After 1,000-Person Waitlist," 21 June 2019

Recent Examples on the Web: Noun

Filling 1 1/2 cups peanut butter (smooth recommended but crunchy is also fine) For the French toast: In a bowl, whisk egg yolks and sugar until sugar dissolves; mix in cream, vanilla and rum. San Diego Union-Tribune, "Decadent French toast recipes from Breakfast Republic’s chef," 13 Aug. 2019 This luxe oil smooths hair and splits, all while helping to protect tresses from UV rays. Essence, "Dope Stuff On My Desk: Hot Curls & Hot Colors!," 2 Aug. 2019 Loquat leaf delivers antioxidants, which both prevent sun damage in real time (by neutralizing free radicals) and repair skin overnight, while Japanese wild rose smooths skin texture and minimizes the look of my otherwise gigantic pores. Deanna Pai, Condé Nast Traveler, "The Multitasking Sunscreen I Never Leave Home Without," 22 July 2019 Compared to the diamond-like faceting of the F-117A, Tacit Blue featured smooth, flowing shapes that ended in sharp edges. Kyle Mizokami, Popular Mechanics, "The Very Real Aircraft of Area 51," 19 July 2019 In addition to making your hair crazy smooth, the spray also works as a heat protectant and to keep your hair impervious to the effects of humidity. Jihan Forbes, Allure, "The IGK Good Behavior Smoothing Spray Is Like a Keratin Treatment in a Bottle," 28 July 2018 After the joint compound has dried (usually at least two hours), remove the screws and sand the surface of the patch smooth. Peter Martin, Popular Mechanics, "How to Fix a Hole in Drywall," 7 Nov. 2018 This very thin liquid layer also makes ice extra smooth. Brian Resnick, Vox, "The surprising science of why ice is so slippery," 31 Jan. 2019 On Tuesday, Nvidia fulfilled its CES promises by releasing GeForce driver 417.71, which lets GeForce graphics cards tap into the Adaptive Sync capabilities of AMD FreeSync monitors for buttery-smooth, tearing-free gaming. Brad Chacos, PCWorld, "Nvidia driver unlocks FreeSync monitor support for GeForce graphics cards," 15 Jan. 2019

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

14 Aug 2019

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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 How to pronounce smooth (audio) \
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 How to pronounce smooth (audio) \

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

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of or relating to the heavens

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