Decorum
noun /dɪˈkɔːrəm/ — Behavior that fits the occasion perfectly.
Definition
Behavior in keeping with good taste and propriety; proper and dignified conduct.
Beyond the definition
Decorum is the old word for situational intelligence — knowing that the same behavior that belongs at a dinner party would be wrong at a funeral. The capacity to read an occasion and match your behavior to it.
Origin & history
From Latin decorum — suitability, propriety (decere 'to be fitting, proper').
Example sentences
Illustrative sentences for learning, not verified community posts or sourced quotations.
She maintained perfect decorum throughout the ordeal, which everyone remarked on later.
His decorum in a difficult meeting showed a kind of quiet leadership.
Decorum doesn't mean formality — it means appropriateness.
Synonyms
Antonyms
impropriety, rudeness, indecorum
Related words
Decorum vs etiquette
Etiquette is the specific set of rules for how to behave in a given social context — the correct fork, the appropriate form of address, the expected greeting. Decorum is more flexible and more fundamental: not the rules themselves but the judgment to know what behavior fits the occasion. Etiquette can be memorised; decorum must be understood. You can follow etiquette mechanically; decorum requires reading the room.
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Word in the Wild
See how this word appears in life, language and stories.
Illustrative sentences and imagined stories for learning — not verified sightings, interviews, or sourced quotations.
Fictional scene
Team leader reviewing architectural models
A team leader reviews an architectural model with open hands and composed posture, showing professional and thoughtful behavior.
The composed, respectful interaction between the colleagues demonstrates conduct that is in keeping with good taste and propriety, establishing a standard of dignified behavior within a professional environment.
Image credit: Wordspun · AI-generated conceptual illustration