whack

¹ American  

[hwak, wak] / ʰwæk, wæk /

verb (used with object)

1. to strike with a smart, resounding blow or blows.

2. Slang. to divide into or take in shares (often followed byup ).

   Whack the loot between us two.

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verb (used without object)

1. to strike a smart, resounding blow or blows.

noun

1. a smart, resounding blow.

   a whack with his hand.

2. Informal. a trial or attempt.

   to take a whack at a job.

   Synonyms:

   turn, go, try

3. Slang. a portion or share.

verb phrase

1. whack out to produce quickly or, sometimes, carelessly.

   She whacks out a short story every week or so.

2. whack off

   1. to cut off or separate with a blow.

      The cook whacked off the fish's head.

   2. Slang: Vulgar. to masturbate.

idioms

1. out of whack, out of order or alignment; not in proper condition.

whack ² American  

[hwak, wak] / ʰwæk, wæk /

noun

1. a variant of wack.

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whack British  

/ wæk /

verb

1. to strike with a sharp resounding blow

2. informal (usually passive) to exhaust completely

3. informal (tr; usu foll by in or on) to put something on to or into something else with force or abandon

   whack on some sunscreen

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noun

1. slang (tr) to murder

   if you were out of line you got whacked

2. a sharp resounding blow or the noise made by such a blow

3. informal a share or portion

4. informal a try or attempt (esp in the phrase have a whack at )

5. informal out of order; unbalanced

   the whole system is out of whack

interjection

1. an exclamation imitating the noise of a sharp resounding blow

whack More Idioms  

More idioms and phrases containing whack

• have a crack (whack) at
• out of kilter (whack)

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Other Word Forms

• whacker noun

Etymology

Origin of whack

First recorded in 1710–20; originally dialect, Scots form of thwack; whang ², whittle

Example Sentences

It was a perfectly paced innings, showing his wish for batters not to be "too careful" does not simply mean whack boundaries from every ball.

From BBC • Feb. 24, 2026

At times, big atmospheric waves that form closer to the ground can travel upward and knock the polar vortex out of whack.

From Barron's • Jan. 22, 2026

Surging demand for physical silver has pushed the market for the white metal out of whack.

From MarketWatch • Jan. 17, 2026

Most estimates turn to historical data to find some level when supply and demand weren’t completely out of whack.

From Los Angeles Times • Sep. 27, 2025

Then Ken blinked his eyes like someone coming to after a whack on the head.

From "The Egypt Game" by Zilpha Keatley Snyder

Related Words

• wallop