irresponsible Meaning in the Cambridge English Dictionary
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Meaning of “irresponsible” in the English Dictionary

"irresponsible" in British English

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irresponsibleadjective

uk   /ˌɪr.ɪˈspɒn.sɪ.bl̩/  us   /-ˈspɑːn-/ disapproving
B2 not ​thinking enough or not ​worrying about the ​possibleresults of what you do: [+ to infinitive] It would be irresponsible toignore these ​warnings.
irresponsibly
adverb uk   us   /-bli/
It's ​unlike you to ​behave so irresponsibly.
irresponsibility
noun [U] uk   /ˌɪr.ɪˌspɒn.səˈbɪl.ɪ.ti/  us   /-ˌspɑːn.səˈbɪl.ə.t̬i/
It was an ​act of ​gross irresponsibility to ​leave someone who wasn't ​properlytrained in ​charge of the ​machine.
(Definition of irresponsible from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"irresponsible" in American English

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irresponsibleadjective

 us   /ˌɪr·ɪˈspɑn·sə·bəl/
not ​thinkingcarefully enough or not ​caring about what might ​result from ​actions taken: [+ to infinitive] It would have been irresponsible to ​let Claire ​drivehome when she was so ​tired.
irresponsibly
adverb  us   /ˌɪr·ɪˈspɑn·sə·bli/
(Definition of irresponsible from the Cambridge Academic Content Dictionary © Cambridge University Press)
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