Careless of one's duty, blasé, and carefree are all synonyms for irresponsible. Responsible, sensible, and serious are these antonyms of irresponsible. And here are another 57 synonyms for irresponsible.
Irresponsible Synonyms
- Blasé
- Carefree
- Careless of one's duty
- Careless
- Casual
- Daredevil
- Delinquent
- Derelict
- Devil-may-care
- Disregardful
- Erratic
- Feather-brained
- Flighty
- Foolhardy
- Foolish
- Giddy
- Hare-brained
- Harum-scarum
- Hasty
- Heedless
- Hot-headed
- Ill-advised
- Ill-considered
- Immature
- Impetuous
- Imprudent
- Impulsive
- Inadvertent
- Inattentive
- Incautious
- Injudicious
- Insouciant
- Lax
- Misguided
- Naive
- Neglectful
- Negligent
- Oscitant
- Overhasty
- Precipitate
- Precipitous
- Rash
- Reckless
- Remiss
- Scatterbrained
- Slack
- Tearaway
- Thoughtless
- Uncaring
- Undependable
- Unheeding
- Unreliable
- Untrustworthy
- Unwise
- Wild
- Slap-happy