Flat
Flat adjective - Causing weariness, restlessness, or lack of interest.
Usage example: a flat portrayal of Benjamin Franklin in the new TV series
Stale is a synonym for flat in dull topic. In some cases you can use "Stale" instead an adjective "Flat", when it comes to topics like old, solid, foul, flavourless. popular alternative
Stale
Stale adjective - Used or heard so often as to be dull.
Usage example: viewers were bored by the stale story lines of the new crop of sitcoms
Flat is a synonym for stale in old topic. You can use "Flat" instead an adjective "Stale", if it concerns topics such as characteristic, solid, foul, tasteless. popular alternative
Nearby Words: staled, staling
Mutual synonyms
Both words in one sentence
- The Nintendo GameCube sequels were (generally) considered to be stale and mediocre, and Mario Party Advance released during the same period was considered flat-out bad for its poor multiplayer experience.
Source: Dork Age / Video Games
Cite this Source
Stale and Flat. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/flat/stale
Flat & Stale. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/flat/stale>.
Stale or Flat. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/flat/stale.
Google Ngram Viewer shows how "flat" and "stale" have occurred on timeline