Fixed and Flat

Fixed

Fixed adjective - Having been established and usually not subject to change.
Usage example: the baseball card dealer's prices were fixed, so bargaining was not an option

Flat is a synonym for fixed in manner topic. In some cases you can use "Flat" instead an adjective "Fixed", when it comes to topics like change.

Nearby Words: fix, fixing, fixedly, fixation, fixer

Flat

Flat adjective - Having been established and usually not subject to change.
Usage example: charged a flat rate for overseas calls

Fixed is a synonym for flat in absolute topic. You can use "Fixed" instead an adjective "Flat", if it concerns topics such as manner, change, set.

Nearby Words: flatter, flatly, flatness, flatlet, flatting
Cite this Source
Flat and Fixed. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/fixed/flat
Fixed & Flat. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/fixed/flat>.
Flat or Fixed. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/fixed/flat.
Google Ngram Viewer shows how "fixed" and "flat" have occurred on timeline