This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. Marked by a lack of responsibility: irresponsible accusations.

adj. Lacking a sense of responsibility; unreliable or untrustworthy.

adj. Law Not mentally or financially fit to assume responsibility.

adj. Not liable to be called to account by a higher authority.

n. One who has no sense of responsibility.

n. Law One who is mentally or financially unfit to assume responsibility for one's actions.

n. One who is unlikely to be called to account by a higher authority.

adj. Lacking a sense of responsibility; incapable of or not chargeable with responsibility; unable to respond to obligation.

adj. Not responsible; not subject to responsibility; not to be held accountable, or called into question.

n. Someone who is not responsible.

adj. Not responsible; not liable or able to answer for consequences; innocent.

adj. Not to be trusted; unreliable; lacking a proper sense of responsibility.

Not responsible; not subject to responsibility; not to be held accountable, or called into question: as, an irresponsible government; the irresponsible control of wealth.

Not capable of or chargeable with responsibility; unable to respond to obligation, as an insolvent debtor; not subject to or incurring legal responsibility, as an infant or idiot for his acts; not of a responsible nature or character.

adj. showing lack of care for consequences

"Mr. Holder also lashed out at Republican critics for using what he called "irresponsible and inflammatory rhetoric.""

unreliable    slaphappy    freewheeling    happy-go-lucky    carefree    loose    harum-scarum    feckless    unaccountable    idle   

innocent    unreliable    unaccountable   

responsible   

reckless    capricious    foolish    thoughtless    corrupt    irrational    incompetent    insane    ignorant    impulsive