Flat and Sure

Flat

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

Sure and flat are semantically related. In some cases you can use "Sure" instead the word "Flat" as an adjective or an adverb.

Nearby Words: flatter, flatly, flatness, flatlet, flatting

Sure

Sure adjective - Having or showing a mind free from doubt.

Flat and sure are semantically related. Sometimes you can use "Flat" instead the word "Sure" as an adjective or an adverb.

Nearby Word: surely

Both words in one sentence

  • The game flat-out tells you this and to not proceed until you're sure you've done everything you want to.
  • Literature / Gate She also has a notably bigger bust, when in the manga, she was flat enough that Pina joked that she wasn't sure if Hamilton was a boy or girl.
  • The game asks you twice if you're sure, and flat-out tells you the second time that you will die if you turn it on.
Cite this Source
Sure and Flat. (2016). Retrieved 2026, July 29, from https://thesaurus.plus/related/flat/sure
Flat & Sure. N.p., 2016. Web. 29 Jul. 2026. <https://thesaurus.plus/related/flat/sure>.
Sure or Flat. 2016. Accessed July 29, 2026. https://thesaurus.plus/related/flat/sure.
Google Ngram Viewer shows how "flat" and "sure" have occurred on timeline