impropriety

impropriety is a   Noun

Definition:

[1] The quality of being improper; unfitness or unsuitableness to character, time place, or circumstances; as, improperiety of behavior or manners.

[2] That which is improper; an unsuitable or improper act, or an inaccurate use of language. But every language has likewise its improprieties and absurdities. Johnson. Many gross improprieties, however authorized by practice, ought to be discarded. Swift.

Synonyms: