Exhibiting a lack of responsiveness.
Not particularly good or bad, large or small, right or wrong, etc.; fair, average, etc.
Not interested; indifferent
Find another word for irresponsive. In this page you can discover 5 synonyms, antonyms, idiomatic expressions, and related words for irresponsive, like: taciturn, unmoved, unresponsive, indifferent and unconcerned.