Word family noun responsibility ≠ irresponsibility adjective responsible ≠ irresponsible adverb responsibly ≠ irresponsibly
From Longman Dictionary of Contemporary Englishirresponsibleir‧re‧spon‧si‧ble /ˌɪrɪˈspɒnsəbəl◂ $ -ˈspɑːn-/ ●○○ adjective CARELESSdoing careless things without thinking or worrying about the possible bad results OPP responsibletotally/highly/completely etc irresponsible When it comes to money, Dan is completely irresponsible.it is irresponsible (for somebody) to do something It would be irresponsible not to turn up for work without calling. It was highly irresponsible of him to leave the children on their own in the pool.► see thesaurus at careless —irresponsibly adverb He was acting totally irresponsibly. —irresponsibility /ˌɪrɪspɒnsəˈbɪləti $ -spɑːn-/ noun [uncountable]Examples from the Corpus
irresponsible• When it comes to money, Dan is completely irresponsible.• Careless, stupid and now irresponsible.• The implication was clear: to discuss Article 6 would be an irresponsible aberration.• He is irresponsible about his debts, alcoholic, accident-prone, and susceptible to disease.• Critics accused the governor of being irresponsible, and claimed that his new proposal would put thousands of US troops at risk.• There is so much poverty, corruption, irresponsible decision-making around.• Richard always used to be seen as irresponsible in the first half and elegiac in the second.• By shifting blame to their consumers, these industries have deftly evaded financial accountability for unsafe products and irresponsible marketing.• Police blame higher crime rates on irresponsible parents who allow their teenage children to stay out all night.totally/highly/completely etc irresponsible• He's fun, but totally irresponsible.• I had no money and she was being highly irresponsible.• This sect was and still is considered bizarre and highly irresponsible.• This action of Reg's was totally irresponsible on two counts. 