adjective. Marked by a lack of responsibility.

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

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

noun. One who has no sense of responsibility.

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

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.

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

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

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

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

noun. Someone who is not responsible.

adjective. showing lack of care for consequences

""What shadow of reason," he asks, "is there for doubting that such sales as are necessary and inevitable will be far more sagaciously managed by a Local Board, which the ratepayers elect _for this sole purpose_, than either by magistrates who are irresponsible and do not suffer sensibly from the public vice, or by an _irresponsible_ or _multitudinous_ Committee of Parliament?"

carefree  devil-may-care  do-nothing  feckless  freewheeling  

responsible  

capricious  corrupt  foolish  idle  ignorant  

adrift  afloat  alternating  amorphous  capricious