irresponsible

From Wiktionary

Word parts[change]

ir- + responsible

Pronunciation[change]

Adjective[change]

Positive
irresponsible

Comparative
more irresponsible

Superlative
most irresponsible

  1. When someone is irresponsible, he/she is not responsible and does not care about anything that goes wrong.
    My uncle's friend is irresponsible. He does not care about the damage he caused because of him misbehaving in public, causing his company to suffer because of this.