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Definitions

smooth

[smooth] / smuð /
ADJECTIVE
level, unwrinkled; flowing
Synonyms
STRONGEST
continuous creamy easy effortless flat fluid gentle glossy mild peaceful polished quiet serene shiny silky sleek soft stable steady tranquil uneventful velvety
STRONG
even flush horizontal invariable plain plane regular shaven soothing still uniform
WEAK
bland equable fluent frictionless glassy hairless lustrous mirrorlike monotonous planate rhythmic rippleless unbroken undeviating undisturbed uninterrupted unruffled untroubled unvarying
Antonyms
STRONGEST
agitated broken clamorous complex complicated demanding difficult discontinuous disturbed dull excited hard harsh intermittent intricate loud noisy raised rough sharp strict strong troubled turbulent unfixed unstable violent wild wobbly
STRONG
abnormal changing different extraordinary inconsistent irregular uncommon uneven upright variable vertical
WEAK
coarse uncool wrinkled
ADJECTIVE
suave in behavior
Synonyms
STRONGEST
civilized mellow mild pleasant polished slick
WEAK
agreeable bland courteous courtly facile genial glib ingratiating persuasive polite smarmy unctuous urbane
Antonyms
STRONGEST
rough
WEAK
coarse uncool
VERB
make level
Synonyms
STRONGEST
flatten
STRONG
burnish clear even flush glaze gloss grade iron lay level perfect plane polish press refine round sand sleek slick varnish
WEAK
make uniform
Antonyms
STRONG
roughen
WEAK
coarsen wrinkle
VERB
make peace
Synonyms
STRONGEST
alleviate ease facilitate iron out mellow mitigate soften
STRONG
allay appease assuage calm comfort cool cool out extenuate mollify palliate pat stroke
WEAK
pave the way take the edge off take the sting out
Antonyms
STRONGEST
aggravate increase intensify irritate worsen
STRONG
agitate annoy exasperate incite provoke trouble upset worry

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Cynthia was involved in some of them, but Stafford said that she eventually tried to smooth things over with her rival.

From Slate • Apr. 6, 2026

It is common courtesy today to reach for a nearby rake after you have played from a bunker, and to smooth out the surface for the rest of the players.

From The Wall Street Journal • Apr. 4, 2026

The successful launch of the Artemis II mission on Wednesday and its translunar injection burn Thursday evening have been inspiring, with the smooth operations capping a two-decade effort.

From MarketWatch • Apr. 3, 2026

One cavity stood out because its inner surface was smooth instead of rough like bone.

From Science Daily • Apr. 3, 2026

I heard the alley door open and Willemse’s voice, smooth and ingratiating.

From "The Hiding Place" by Corrie ten Boom

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.