Meaning of the word incorrigible in English

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

incorrigible

US /ɪnˈkɔːr.ə.dʒə.bəl/
UK /ɪnˈkɒr.ə.dʒə.bəl/

Adjective

not able to be corrected, improved, or reformed

Example:
He's an incorrigible liar, you can't trust a word he says.
Her incorrigible optimism always brightens the mood.