The word people use when you've done something that isn't technically "bad" or "wrong" but they still don't like it anyway and expect you to conform to their personal tastes.

The current euphemism for "wrong" or "bad." It is supposed to sound more objective than "wrong" and "bad," but it is not.

What your mom says when she catches you masturbating.

In high school settings, short skirts, low cut tops, see through clothing and skin tight jeans. The student handbook says not to wear this, but many girls still wear it anyway to look skanky.

the definition of urban dictionary

putting it simply, not appropriate

not suitable or proper in the circumstances. Action could be used in a talking, visual, or sexual manner.