Word Type

Adjective

Noun

Adjective

The word "irresponsible" can be used as adjective, noun and adjective.

Word Relationships

Opposites (Antonyms)

responsible

Derived Terms

irresponsibilism irresponsibilist irresponsibility irresponsibleness irresponsibly

Derived From

responsible

Related Terms

unresponsive

Related Terms

accountable negligent obligation question responsibility responsible unresponsive

Similar Terms

carefree devil-may-care do nothing do-nothing feckless feckless freewheeling happy go lucky happy-go-lucky harum-scarum idle loose loose slaphappy trigger happy trigger-happy unaccountable unaccountable unreliable unreliable

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.