smooth

1 of 3

adjective

ˈsmüt͟h 

1

a(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

5

a

: serene, equable

a smooth disposition

b

: amiable, courteous

6

a

: not sharp or harsh

a smooth sherry

b

: free from lumps

smooth adverb

smoothly adverb

smoothness noun

smooth

2 of 3

verb

smoothed; smoothing; smooths also smoothes

transitive verb

1

: to make smooth

2

a

: 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

5

a

: 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

smoother noun

smooth

3 of 3

noun

1

: a smooth part

2

: the act of smoothing

3

: a smoothing implement

Synonyms

Adjective

• debonair
• sophisticated
• suave
• svelte
• urbane

Verb

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

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

Adjective

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.

Verb

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.

Recent Examples on the Web

Adjective

But If your skin is more on the sensitive side of the spectrum, my suggestion is to only use gentler acids like lactic, mandelic or salicylic once a week to keep the skin smooth and bright. —Samantha Mims, Essence, 10 Apr. 2024

The ride is smooth and quiet, even over rough surfaces. —Mark Phelan, Detroit Free Press, 10 Apr. 2024

Simmered in chicken or vegetable broth or stock — alongside onion, garlic and butter — until tender, the entire pot gets pureed with an immersion blender until smooth. —Aaron Hutcherson, Washington Post, 9 Apr. 2024

Beat with an electric mixer until smooth and fluffy, 2 to 3 minutes. —Southern Living Test Kitchen, Southern Living, 8 Apr. 2024

What's more, the outsoles are made of rubber, which keeps you from slipping on smooth or wet surfaces. —Jean Chen Smith, Travel + Leisure, 5 Apr. 2024

The ride is as quiet and smooth as EV drivers have come to expect. —Bloomberg, The Mercury News, 4 Apr. 2024

Over time, our skin's condition improved, becoming smoother with reduced fine lines. —Lauren Paige Richeson, Health, 3 Apr. 2024

The update has gone down very well with Galaxy S23 users on Reddit, who are creating Ben 10 memes in response to the futuristic AI features and commenting on how much smoother the UI animations are now. —Janhoi McGregor, Forbes, 29 Mar. 2024

Verb

Though the 1930s woman may have used a pliable girdle to smooth things out, this was not your Victorian-esque paper maché stiff waist snatcher. —Lilah Ramzi, Vogue, 5 Apr. 2024

Inmates in a special training program designed to smooth re-entry into the community after incarceration are getting to see the fruits of their labor – or rather the honey of their labor – for the first time. —Alicia Devine, USA TODAY, 5 Apr. 2024

David Robert Elliott One product Evelyn does not use is retinol, a form of vitamin A that helps smooth wrinkles and boost collagen production, which begins to slow down around age 25. —Dianna Mazzone Singh, Allure, 2 Apr. 2024

Now, both are trying to smooth their hard edges to win over the middle-of-the-road voters who will likely decide the victor in the Arizona Senate race -- and, possibly, control of the entire chamber. —Tal Axelrod, ABC News, 2 Apr. 2024

These pieces were intentionally designed with double-layered tricot compression zones strategically placed on the waist and stomach to smooth and cinch your curves. —Kerane Marcellus, Essence, 27 Mar. 2024

Officials with the Transportation Department are monitoring trade flows and working with industry and labor officials to develop strategies to smooth any bottlenecks. —David J. Lynch, Washington Post, 26 Mar. 2024

The products contain hyaluronic acid microspheres to help smooth fine lines and wrinkles, along with a peptide complex to enhance youthful skin, fatty acids to help protect and restore, and collagen stabilizer to help moisturize and provide a smoothing effect. —Dahvi Shira, Forbes, 28 Mar. 2024

From firming fine lines to smoothing rough texture, the serum is the key to a complete, reparative nighttime skin routine. —Essence, 27 Mar. 2024

Noun

The gentle serum instantly smooths and soothes thanks to its namesake triple oat complex, which is clinically proven to lock in moisture for rough, dry skin. —Danielle Cohen, Glamour, 3 Apr. 2024

Once that dries, sand smooth using 100-grit sandpaper or a medium-grit sanding block or sanding sponge. —Jeanne Huber, Washington Post, 8 Mar. 2024

With a full-coverage underwire cup style and smoothing wings, this bra smooths, lifts, and supports while also minimizing breast size. —Jessie Quinn, Peoplemag, 5 Aug. 2023

Step out for a ballroom and Latin dance competition featuring competitive events in international standard and Latin, American smooth and rhythm, and nightclub dances. —Brittany Delay, The Mercury News, 27 Feb. 2024

Fortunately, the waistband's slight compression smooths and lifts in all of the right places. —Katie Jackson, Travel + Leisure, 25 Feb. 2024

The wheels and sturdy handles make transportation smooth, but its kickstand doesn’t work well. —Megan Ulu-Lani Boyanton, Better Homes & Gardens, 2 Jan. 2024

Building one of these from a kit comes down to this: pin the parts together, peen over the pin heads, and grind the rough assembly smooth using a random orbit sander. —Roy Berendsohn, Popular Mechanics, 28 Aug. 2023

The Super Peptide Booster is a lightweight serum that smooths and firms skin with a cocktail of ingredients that includes firming orchard stem cells and hydrating peony root extract. —Angela Trakoshis, Allure, 11 July 2023

Word History

Etymology

Adjective

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

First Known Use

Adjective

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

Verb

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

Noun

15th century, in the meaning defined at sense 1

Phrases Containing smooth

• (as) smooth as silk
• smooth a path
• smooth away
• smooth breathing
• smooth fox terrier
• smooth hound
• smooth muscle
• smooth operator
• smooth out
• smooth over
• smooth sailing
• smooth talker
• smooth-talking
• smooth the way
• smooth things out
• smooth-tongued
• take the rough with the smooth

Kids Definition

smooth

1 of 2 adjective

ˈsmüt͟h 

1

a

: having a continuous even surface : not rough

a smooth skin

b

: not hairy

2

: free from obstacles or difficulties

a smooth path

3

: even and uninterrupted in flow or flight

4

: flattering but not truthfully so

a smooth talker

5

a

: calm in manner or behavior : serene

a smooth disposition

b

: amiable, courteous

6

: not sharp or harsh

a smooth sherry

smoothly adverb

smoothness noun

smooth

2 of 2 verb

1

: to make smooth

smooth the edge of a board

2

a

: to free from what is harsh or disagreeable : polish

smoothed out my style

b

: to make calm : soothe

3

: to make (as a fault) seem of little importance in order to avoid bad feelings

smoothed things over with apologies

4

: to free from trouble or difficulty

smoothed the way for a quick end to the dispute

5

: to press flat

smoothed down the folds of the tablecloth

6

: to cause to lie evenly and in order : preen

smooths down its feathers

smoother noun

Medical Definition

smooth

adjective

ˈsmüt͟h 

: 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