improper

adjectives

not suitable or right or appropriate
"slightly improper to dine alone with a married man"; "improper medication"; "improper attire for the golf course"
is derived from
antonym
is similar to
not in keeping with accepted standards of what is right or proper in polite society
"was buried with indecent haste"; "indecorous behavior"; "language unbecoming to a lady"; "unseemly to use profanity"; "moved to curb their untoward ribaldry"
is similar to
improper or even offensive
"out-of-the-way remarks"
is similar to
not in accord with established usage or procedure
"the wrong medicine"; "the wrong way to shuck clams"; "it is incorrect for a policeman to accept gifts"
see also
not suitable for a particular occasion etc
"noise seems inappropriate at a time of sadness"; "inappropriate shoes for a walk on the beach"; "put inappropriate pressure on them"
see also
offensive to good taste especially in sexual matters
"an earthy but not indecent story"; "an indecent gesture"
see also
lacking propriety and good taste in manners and conduct
"indecorous behavior"
see also
below the required standards for a purpose
"an unfit parent"; "unfit for human consumption"
see also
contrary to conscience or morality or law
"it is wrong for the rich to take advantage of the poor"; "cheating is wrong"; "it is wrong to lie"
is an attribute of
correct or appropriate behavior
not conforming to legality, moral law, or social convention
"an unconventional marriage"; "improper banking practices"
is derived from
not appropriate for a purpose or occasion
"said all the wrong things"
is derived from