Not proper or appropriate; not justified or warranted.

Wanting sense of decency or propriety; improper, uncouth.

Of manners or behaviour: Not up to the standard of propriety; improper.

Morally offensive or repulsive; base, degraded, loathsome, vile. In later use also in weaker sense: Offending against propriety; highly objectionable.

Of style, action, etc.: Not in conformity with a recognized standard; improper, faulty.

Improper, nasty; indecent, obscene, immoral.

Not in accordance with good manners, modesty, or decorum; unbecoming, unseemly; indecorous, indecent. Also transferred of a person.

spec. Not in accordance with good manners or decorum; indecent, immodest; = improper, adj. 3.

Nasty; improper, unbecoming. Used esp. to and by children. Obsolete. rare.