Meaning of the word "I couldn't care less" in English

What does "I couldn't care less" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

I couldn't care less

US /aɪ ˈkʊdnt kɛr lɛs/
UK /aɪ ˈkʊdnt kɛə lɛs/
"I couldn't care less" picture

Idiom

used to express that one does not care at all about something

Example:
He was complaining about his new car, but I couldn't care less.
Whether they come or not, I couldn't care less.