improper (
http://definr.com/improper)
adj 1: not suitable or right or appropriate; "slightly improper to
dine alone with a married man"; "improper medication"
[ant:
proper]
2: not conforming to legality, moral law, or social convention;
"an unconventional marriage"; "improper banking practices"
[syn:
unconventional,
unlawful]
3: not appropriate for a purpose or occasion; "unsuitable
attire for the office"; "said all the wrong things" [syn:
unsuitable,
wrong]