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whacked-out

[hwakt-out, wakt-]
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adjective Slang.
  1. tired; exhausted; worn-out.
  2. wacky; crazy.
  3. stupefied or crazed by narcotic drugs or alcohol; stoned.

Origin of whacked-out

First recorded in 1965–70
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018