Decorous RJ Hamster 2 years ago WORD OF THE DAY Decorous [ dek-er-uhs ] adjective proper in behavior; polite and restrained. Examples of decorous in a sentence: The soldier was reprimanded by his commanding officer for behaving in a way that was not decorous. The appreciative guest displayed decorous behavior toward his host. No longer want to receive these emails? Unsubscribe. Word Guru 695 Town Center Dr Suite 1200 Costa Mesa, CA 92626 Share this:Print