Definition

1. Adjective:
   • Exhausted or worn out: Used informally, primarily in British English, to describe a state of extreme physical or mental fatigue.

Usage

• This is an informal, primarily British, adjective. It typically follows a linking verb like "be," "feel," or "look." It describes a person's state after significant exertion.

Examples

Advanced Usage

• "whacked out": An intensified informal variant meaning extremely tired, or sometimes behaving in an irrational or eccentric manner due to exhaustion or other factors.
  • After the 24-hour shift, he was totally whacked out.

Variants and Related Words

• Whack (verb): To hit something forcefully. The adjective "whacked" derives from this sense of being metaphorically beaten down by fatigue.
• Whacker (noun, informal): A person or thing that whacks; sometimes used in British slang (e.g., "nutter" or eccentric person).

Synonyms

• Exhausted
• Shattered (UK informal)
• Knackered (UK informal)
• Drained
• Spent

Antonyms

• Energetic
• Refreshed
• Invigorated

Related Idioms

• "Out of whack": Not functioning correctly; out of order. (Note: This idiom uses "whack" as a noun and is related in form but has a different meaning from the adjective "whacked.")
  • The engine timing is out of whack.

Adjective

1. (British informal) exhausted or worn out