Meaning of the word dotty in English

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

dotty

US /ˈdɑː.t̬i/
UK /ˈdɒt.i/

Adjective

mentally unbalanced or eccentric; crazy

Example:
My aunt is a bit dotty in her old age, always forgetting where she put things.
He's completely dotty about his new girlfriend.