Formal and Styleless

Formal

Formal adjective - Relating to or suitable for wearing to an event requiring elegant dress and manners.
Usage example: a shop that rents out formal wear

Styleless is an antonym for formal.

Styleless

Styleless adjective - Marked by an obvious lack of style or good taste.

Formal is an antonym for styleless.
Cite this Source
Styleless and Formal. (2016). Retrieved 2026, August 07, from https://thesaurus.plus/related/formal/styleless
Formal & Styleless. N.p., 2016. Web. 07 Aug. 2026. <https://thesaurus.plus/related/formal/styleless>.
Styleless or Formal. 2016. Accessed August 07, 2026. https://thesaurus.plus/related/formal/styleless.
Google Ngram Viewer shows how "formal" and "styleless" have occurred on timeline