(of a person) not thinking enough about the effects of what they do; not showing a feeling of responsibility an irresponsible teenager an irresponsible attitude It would be irresponsible to ignore the situation. opposite responsible
NAmE//ˌɪrɪˌspɑnsəˈbɪlət̮i//
noun [uncountable] NAmE//ˌɪrɪˈspɑnsəbli//
adverbSee irresponsible in the Oxford Advanced Learner's DictionaryCheck pronunciation: irresponsible