Definite and For certain

Definite

Definite adjective - Having distinct or certain limits.

For certain and definite are semantically related. In some cases you can use "For certain" instead an adjective "Definite".

For certain

For certain adverb - Definitely or positively (`sure' is sometimes used informally for `surely').

Definite and for certain are semantically related. Sometimes you can use "Definite" instead an adjective phrase "For certain".
Cite this Source
For certain and Definite. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/definite/for_certain
Definite & For certain. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/definite/for_certain>.
For certain or Definite. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/definite/for_certain.
Google Ngram Viewer shows how "definite" and "for certain" have occurred on timeline