Casual and Formal

Opposite meaning words

sentence examples

Casual

Casual adjective - Not designed to be worn only on special occasions.
Usage example: a restaurant where people in casual clothes are always welcome
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Synonyms for Casual
Antonyms for Casual
Formal is an antonym for casual in topics: chance, nonchalant.
Nearby Words: casualty, casually, casualised

Formal

Formal adjective - Following or agreeing with established form, custom, or rules.
Usage example: a formal contract that was legally binding
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Synonyms for Formal
Antonyms for Formal
Casual is an antonym for formal in serious topic.
Nearby Words: form, formality, formalize, formalise, formative
Similar words of casual

Similar words of formal

Both words in one sentence

  • People in the Secret Country speak Early Modern English, more or less, with formal and casual styles.
    Source: Creator / Pamela Dean
  • Western Animation / The Real Ghostbusters The show focused on their job, so the boys were often in uniform, but they were often shown out of uniform as well, and appeared in multiple different outfits, both formal and casual.
    Source: Western Animation / The Real Ghostbusters
  • Manga / My Bride Is a Mermaid Instead of the formal speech patterns of more traditional YNs like Belldandy or Aoi Sakuraba, Sun has a more "casual" register, with contracted words and dropped final "g"s.
    Source: Manga / My Bride Is a Mermaid
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Cite this Source
Formal and Casual. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/casual/formal
Casual & Formal. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/casual/formal>.
Formal or Casual. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/casual/formal.

Antonyms for casual


Antonyms for formal

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