For certain and Fortuitous

Opposite meaning terms

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

Show all Definitions

Fortuitous is an antonym for for certain in certain topic.

Fortuitous adjective - Coming or happening by good luck especially unexpectedly.

Show all Definitions

For certain is an antonym for fortuitous.

Cite this Source

Fortuitous and For certain. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/for_certain/fortuitous

For certain & Fortuitous. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/for_certain/fortuitous>.

Fortuitous or For certain. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/for_certain/fortuitous.

Google Ngram Viewer shows how "for certain" and "fortuitous" have occurred on timeline