# Decorum (Rhetoric)
Technical term from classical rhetoric ([[Cicero]], [[Quintilian]]) referring to the appropriateness of style to subject matter, audience, and occasion. The Latin *decorum* translates the Greek *to prepon* (τὸ πρέπον) — "the fitting" or "the appropriate."
In rhetoric: a funeral oration demands a different register than a comic speech; addressing the Senate requires different language than addressing soldiers. The orator must match form to context.
In design/typography: choosing typefaces and layouts that suit the content and context — blackletter for medieval manuscripts, clean sans-serif for tech companies, Garamond for literary fiction.
Crucially, decorum concerns **external** fit (does this form suit this situation?) rather than **internal** coherence (do these elements fit each other?). This distinction matters when applying [[Tom Cochrane]]'s fittingness account of beauty, which concerns internal mutual probability of parts, not external appropriateness to context.