Lack of propriety or good taste; impropriety.(noun)
An instance of indecorous behavior or action.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "indecorum" in a sentence
"This is that indecorum, which is explained so much at large by Cicero in his Offices."
"A scandal is a serious indecorum which is used generally in reference to the clergy."
"The necessity of it to my defence against a more heinous charge could alone have extorted from me so painful an indecorum."