Upper-Intermediate (B2)
IPA: /dɪˈkɔːrəsnəs/
KK: /dɪˈkɔrəsnəs/
Definition
The quality of being polite, proper, and respectful in behavior or appearance.
Example
Her decorousness at the formal dinner impressed all the guests.
Conversation

Did you notice how the guests displayed such decorousness at the party last night?

Absolutely! It was nice to see everyone behaving so well.

I think it made the atmosphere feel more enjoyable overall.

For sure, a little decorousness goes a long way in creating a pleasant environment.
Synonyms & Antonyms
Synonyms
propriety
decorum
etiquette
Antonyms
indecorum
impropriety
rudeness
Root Explanation
Decorousness → It is formed from "decorous" (from Latin "decorus", meaning proper or seemly) and the suffix "-ness" (meaning the state or quality of). The word "decorousness" refers to the quality of being proper or in good taste.
Memory Tip
Think of 'decorous' meaning proper or seemly, and remember that 'decorousness' refers to the quality of being proper.
Visually Confused Words
undecorousness
indecorousness
odorousness
enormousness
dolorousness
dextrousness
desirousness
canorousness