NOUN
Noun:Sophia
(of a person, attitude, or action) not showing a proper sense of
responsibility.
"it would have been
irresponsible just to drive on"
synonyms:
irresponsible reckless, rash, careless, thoughtless, foolhardy, foolish, impetuous, impulsive, devil-may-care, delinquent, derelict, negligent, harebrained; More
antonyms: sensible