smack
1 Americanverb (used with object)
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to strike sharply, especially with the open hand or a flat object.
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to drive or send with a sharp, resounding blow or stroke.
to smack a ball over a fence.
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to close and open (the lips) smartly so as to produce a sharp sound, often as a sign of relish, as in eating.
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to kiss with or as with a loud sound.
verb (used without object)
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to smack the lips.
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to collide, come together, or strike something forcibly.
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to make a sharp sound as of striking against something.
noun
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a sharp, resounding blow, especially with something flat.
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a smacking of the lips, as in relish or anticipation.
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a resounding or loud kiss.
adverb
verb phrase
noun
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Eastern U.S. a fishing vessel, especially one having a well for keeping the catch alive.
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British. any of various small, fully decked, fore-and-aft-rigged vessels used for trawling or coastal trading.
noun
verb
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(tr) to strike or slap smartly, with or as if with the open hand
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to strike or send forcibly or loudly or to be struck or sent forcibly or loudly
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to open and close (the lips) loudly, esp to show pleasure
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(tr) to kiss noisily
noun
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a sharp resounding slap or blow with something flat, or the sound of such a blow
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a loud kiss
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a sharp sound made by the lips, as in enjoyment
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informal to attempt
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informal a snub or setback
adverb
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directly; squarely
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with a smack; sharply and unexpectedly
noun
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a smell or flavour that is distinctive though faint
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a distinctive trace or touch
the smack of corruption
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a small quantity, esp a mouthful or taste
verb
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to have the characteristic smell or flavour (of something)
to smack of the sea
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to have an element suggestive (of something)
his speeches smacked of bigotry
noun
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a sailing vessel, usually sloop-rigged, used in coasting and fishing along the British coast
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a fishing vessel equipped with a well for keeping the catch alive
noun
Etymology
Origin of smack1
First recorded before 1000; (noun) Middle English smacke, Old English smæc; cognate with Middle Low German smak, German Geschmack “taste”; (verb) Middle English smacken “to perceive by taste, have a (specified) taste,” derivative of the noun; compare German schmacken
Origin of smack2
First recorded in 1550–60; imitative; compare Dutch, Low German smakken, German (dialectal) schmacken
Origin of smack3
First recorded in 1605–15, smack is from the Dutch word smak
Origin of smack4
First recorded in 1960–65; probably special use of smack 1; compare earlier slang schmeck with same sense (from Yiddish shmek “sniff, whiff”; compare Middle High German smecken ( German schmecken ) “to taste”
Explanation
A smack is a slap or blow made with the palm of a hand or something else that's flat. Instead of giving your dog a smack for chasing the cat, you should speak calmly and firmly to him. Smack also describes the sound of a smack, like when your Frisbee hits your neighbor's house with a smack. It's a verb too: "I'm tempted to smack you for saying that about my brother." Sometimes, smack takes the form of a descriptive adverb: "I ran smack into the mailbox while I was texting and walking." Informally, a smack can also be a kiss, or an eager movement of the lips in anticipation of something delicious.
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.
Even if Fuqua had made the movie like a gritty documentary, just the entrance of Bubbles the chimp would smack of camp.
From Los Angeles Times • Apr. 22, 2026
But what’s extra notable about the sputtering tech partnerships of the 2020s is how baldly they smack of desperation.
From Slate • Apr. 16, 2026
That’s almost smack in the middle of its range in the past three years, implying shares could always become more expensive.
From Barron's • Feb. 2, 2026
She also met a 12-year-old boy who described using music during his therapy sessions, and told her how he now plays the drums in a school band because he loves instruments "I can smack".
From BBC • Jan. 27, 2026
The pigeon hit a shelf with a loud smack and slumped to the floor.
From "Aru Shah and the End of Time" by Roshani Chokshi
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.