Formal
Formal adjective - Following or agreeing with established form, custom, or rules.
Rigid is a synonym for formal in property topic. In some cases you can use "Rigid" instead an adjective "Formal", when it comes to topics like established, explicit, conventional, official.
Mutual synonyms
Both words in one sentence
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At first it's formal and rigid before becoming increasing casual and almost skipping.
Source: Credits Running Sequence -
Until the Soul Society arc, Byakuya had retained a rigid, formal distance from both of them.
Source: Big Brother Mentor -
She often speaks in a rigid, formal tone since that is what she has learned and doesn't know much slang or Korean proverbs.
Cite this Source
Rigid and Formal. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/formal/rigid
Formal & Rigid. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/formal/rigid>.
Rigid or Formal. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/formal/rigid.
Google Ngram Viewer shows how "formal" and "rigid" have occurred on timeline