Synonyms of irresponsible

irresponsible

adjective

ˌir-i-ˈspän(t)-sə-bəl 

as in reckless

having or showing a lack of concern for the consequences of one's actions

it was irresponsible to go off and leave your baby unattended in an automobile

Synonyms & Similar Words

• reckless
• daring
• daredevil
• adventurous
• foolhardy
• careless
• nonchalant
• bold
• wild
• harum-scarum
• kamikaze
• impetuous
• devil-may-care
• rash
• hasty
• hell-for-leather
• audacious
• carefree
• hotheaded
• venturesome
• thoughtless
• unconcerned
• inconsiderate
• headlong
• feckless
• madcap
• inattentive
• incautious
• regardless
• unmindful
• unthinking
• heedless
• precipitate
• mindless
• blithe
• unworried
• freewheeling
• unheeding
• slaphappy
• happy-go-lucky

Antonyms & Near Antonyms

• responsible
• cautious
• careful
• circumspect
• timid
• heedful
• overcautious
• overcareful

Example Sentences

Recent Examples of irresponsible

Other Reddit users say the woman isn't at fault, and that her boyfriend is an irresponsible pet owner. —Virginia Chamlee, People.com, 28 Apr. 2025

Denmark and other European countries had been lazy and irresponsible about defense for too long. —Jay Nordlinger, National Review, 21 Apr. 2025

Therefore, the lack of any notice or discussion with the city was both disrespectful and irresponsible. —Theo Karantsalis, Miami Herald, 16 Apr. 2025

Carrie already knew that her father was self-absorbed and irresponsible. —Richard Brody, New Yorker, 18 Apr. 2025