Not all there Meaning in English
expression
Definition
Used informally to describe someone who seems mentally confused, a bit crazy, or not fully aware of what's happening. It suggests the person is not thinking clearly.
Usage & Nuances
Informal and sometimes insensitive; avoid using directly to someone's face. More about eccentricity or absent-mindedness than serious mental illness. Common in British and American English, often used as "He's a bit not all there." Avoid in formal contexts.
Example Sentences
Sometimes my uncle acts like he's not all there.
basic
After the accident, she seemed not all there for a while.
basic
He looked at me like I was not all there.
basic
You forgot your keys again? Sometimes I think you're not all there.
natural
Don't mind Tom, he's a nice guy but a little not all there.
natural
The way she talks to her plants, you'd think she's not all there.
natural