- indecorum, indecorousness - a lack of decorum
--1 is a kind of impropriety, improperness
Antonyms: decorum, decorousness
--1 has particulars: unseemliness; unbecomingness - familiarity, impropriety, indecorum, liberty - an act of undue intimacy
--2 is a kind of misbehavior, misbehaviour, misdeed