I. adjective Date: 1648 not responsible: as, not answerable to higher authority , said or done with no sense of responsibility , lacking a sense of responsibility, unable especially mentally or financially to bear responsibility, irresponsibility noun ~ness noun irresponsibly adverb II. noun Date: 1892 a person who is ~
IRRESPONSIBLE
Meaning of IRRESPONSIBLE in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012