Meaning of the word whacked in English

What does whacked mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

whacked

US /wækt/
UK /wækt/

Adjective

1.

exhausted; very tired

Example:
After running the marathon, I was completely whacked.
I'm too whacked to do any more work tonight.
2.

crazy or insane

Example:
He's a bit whacked if he thinks he can do that alone.
That idea sounds completely whacked to me.