Impropriety Im`pro*pri"e*ty, n.; pl. {Improprieties}. [L. improprietas; cf. F. impropri['e]t['e]. See {Improper}.] 1. The quality of being improper; unfitness or unsuitableness to character, time place, or circumstances; as, impropriety of behavior or manners. [1913 Webster]

2. That which is improper; an unsuitable or improper act, or an inaccurate use of language. [1913 Webster]

But every language has likewise its improprieties and absurdities. --Johnson. [1913 Webster]

Many gross improprieties, however authorized by practice, ought to be discarded. --Swift. [1913 Webster]

The Collaborative International Dictionary of English. 2000.