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

The two of them party hard enough and often enough that local police officer Montgomery (Missi Pyle) knows them by name; when some particularly irresponsible carousing crosses a line, however, they’re slapped with a community service sentence. — Guy Lodge, Variety, 25 July 2026

In his reasoning on Tuesday, Baun also pointed out that this year Idaho has already seen more than 2,000 acres burn up due to irresponsible recreational shooting. — Noah Daly july 24, Idaho Statesman, 24 July 2026

The expert also lamented the lack of empathy toward people who have lost relatives and described the handling of the bodies as irresponsible. — Sonia Osorio, Miami Herald, 10 July 2026

As the irresponsible use of AI escalates and an OpenAI smart model has already refused to follow instructions, Cameron's nightmare is turning into reality. — Sergio Pereira, Space.com, 3 July 2026