Flat and Variable
Opposite meaning words
Flat
Flat adjective - Having been established and usually not subject to change.
Usage example: charged a flat rate for overseas calls
Variable
Variable adjective - Capable of being readily changed.
Cite this Source
Variable and Flat. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/flat/variable
Flat & Variable. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/flat/variable>.
Variable or Flat. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/flat/variable.
Google Ngram Viewer shows how "flat" and "variable" have occurred on timeline