Synonyms and Antonyms of irresponsible
- it was irresponsible to go off and leave your baby unattended in an automobile
adventurous, audacious, bold, daring, venturesome
hasty, headlong, hotheaded, impetuous, precipitate, rash, wild
blithe, carefree, happy-go-lucky, madcap, slaphappy
nonchalant, unconcerned, unworried
careless, freewheeling, heedless, inattentive, incautious, mindless, regardless, unheeding, unmindful