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decorum

American  
[dih-kawr-uhm, -kohr-] / dɪˈkɔr əm, -ˈkoʊr- /

noun

  1. dignified propriety of behavior, speech, dress, etc.

    Synonyms:
    dignity, politeness
  2. the quality or state of being decorous, or exhibiting such dignified propriety; orderliness; regularity.

  3. Usually decorums an observance or requirement of polite society.


decorum British  
/ dɪˈkɔːrəm /

noun

  1. propriety, esp in behaviour or conduct

  2. a requirement of correct behaviour in polite society

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Related Words

See etiquette.

Etymology

Origin of decorum

First recorded in 1560–70; from Latin decōrum, noun use of neuter of decōrus decorous

Explanation

Decorum is proper and polite behavior. If you let out a big belch at a fancy dinner party, you're not showing much decorum. This noun is from Latin decōrus "proper, becoming, handsome," from décor "beauty, grace," which is also the source of English décor. The corresponding adjective is decorous, meaning "well-behaved in a particular situation." Both decorum and decorous are often used to describe behavior in a classroom or courtroom.

Keep Reading on Vocabulary.com

Vocabulary lists containing decorum

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Decorum has broken down before during presidential addresses.

From Washington Post • Feb. 10, 2023

Decorum rules circulated to Senate offices say that “reading materials should be confined to only those readings which pertain to the matter before the Senate.”

From Seattle Times • Jan. 19, 2020

Q. Re: Decorum vs. duty: I’ve been in a similar situation to the writer, and I have worked for career services in the past, so hopefully this helps.

From Slate • Mar. 12, 2018

Decorum is observed — grace is said before meals; corsets are tightened; French verbs are conjugated; everyone is called “miss” — but under the surface all kinds of strong emotions seethe and simmer.

From New York Times • Jun. 22, 2017

Decorum, therefore, is a tricky quality to instance: when it is there, you don’t see it.

From "Words Like Loaded Pistols" by Sam Leith