Formal and Indefinite

Opposite meaning words

Formal adjective - Following or agreeing with established form, custom, or rules.

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Indefinite is an antonym for formal in established topic.

Indefinite adjective - Being or seeming to be without limits.

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Formal is an antonym for indefinite.

Nearby Words: indefinable, indefinitely

Cite this Source

Indefinite and Formal. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/formal/indefinite

Formal & Indefinite. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/formal/indefinite>.

Indefinite or Formal. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/formal/indefinite.

Google Ngram Viewer shows how "formal" and "indefinite" have occurred on timeline