Synonyms for irresponsible

Adjective

1. irresponsible (vs. responsible), carefree, devil-may-care, freewheeling, happy-go-lucky, harum-scarum, slaphappy, do-nothing(prenominal), feckless, flighty, head-in-the-clouds, scatterbrained, idle, loose, trigger-happy, unaccountable, unreliable

usage: showing lack of care for consequences; "behaved like an irresponsible idiot"; "hasty and irresponsible action"