Formal and Unorthodox

Formal

Formal adjective - Following or agreeing with established form, custom, or rules.
Usage example: a formal contract that was legally binding

Unorthodox is an antonym for formal.

Unorthodox

Unorthodox adjective - Not rigidly following established form, custom, or rules.
Usage example: an unorthodox but effective procedure for opening a wine bottle without a corkscrew

Formal is an antonym for unorthodox.
Cite this Source
Unorthodox and Formal. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/formal/unorthodox
Formal & Unorthodox. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/formal/unorthodox>.
Unorthodox or Formal. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/formal/unorthodox.
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