Characterized by or exhibiting decorum; proper: decorous behavior. (adjective)
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 "decorous" in a sentence
"Our definition of "decorous" is rather stodgy and inhibited compared to much of the rest of the civilized world."
"Nothing of the Endicott in face or manner, nothing tragical, the expression decorous and formal, perhaps a trifle quizzical, as this was their first meeting since the interview in"
"Years back, before either had married, they had luxuriated together in what would today be termed an affair, although neither then would have conceived of applying a title so decorous to the things they were doing with each other so ardently and incessantly, with never a pledge or serious care of a future together."