improper

The definition of improper is something that does not conform to accepted behaviors or customs, or something that is incorrect.

(adjective)

Laughing at a funeral and insulting the deceased is an example of behavior that would be considered improper.

See improper in Webster's New World College Dictionary

adjective

not suitable for or consistent with the purpose or circumstances; poorly adapted; unfit
not in accordance with the truth, fact, or rule; wrong; incorrect
contrary to good taste or decency; indecorous
not normal or regular

Origin: OFr impropre < L improprius: see in- & proper

Related Forms:

See improper in American Heritage Dictionary 4

adjective

Not suited to circumstances or needs; unsuitable: improper shoes for a hike; improper medical treatment.
Not in keeping with conventional mores; indecorous: improper behavior.
Not consistent with established truth, fact, or rule; incorrect.
Irregular or abnormal.

Related Forms: