out of one's mind

idiomatic phrase

variants or less commonly out of one's skull or out of one's gourd or out of one's tree

: mentally unsound

—usually used informally in an exaggerated way

You can't climb up there! Are you out of your mind?

He was bored out of his mind/skull/gourd/tree.

I feel like I'm going out of my mind.

That noise is driving me out of my mind! [=that noise is bothering me very much]

I was out of my mind with worry. = I was going out of my mind with worry [=I was extremely worried]

Examples of out of one's mind in a Sentence

Recent Examples on the Web

And while the song touches on trying to wipe the memory of the past love of a girlfriend out of one's mind, Hummon made the decision to still surround himself with a bevy of talented women for the filming of the music video. —Tricia Despres, Peoplemag, 22 Mar. 2023

Word History

First Known Use

14th century, in the meaning defined above