"noise seems inappropriate at a time of sadness"; "inappropriate shoes for a walk on the beach"; "put inappropriate pressure on them"
is similar to
not befitting
"behavior unbefitting a father"
is similar to
not appropriate for a purpose or occasion
"said all the wrong things"
see also
of an inappropriate or incorrectly applied nature
see also
not suitable or right or appropriate
"slightly improper to dine alone with a married man"; "improper medication"; "improper attire for the golf course"
is an attribute of
the quality of being specially suitable