For certain
For certain adverb - Definitely or positively (`sure' is sometimes used informally for `surely').
Secret
Secret adjective - Undertaken or done so as to escape being observed or known by others.
For certain is an antonym for secret.
Both terms in one sentence
- While the residents normally tend to themselves, they come together for certain occasions, and serve as the Secret Keeper for the local super hero's civilian identity.
Source: Close-Knit Community
Cite this Source
Secret and For certain. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/for_certain/secret
For certain & Secret. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/for_certain/secret>.
Secret or For certain. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/for_certain/secret.
Google Ngram Viewer shows how "for certain" and "secret" have occurred on timeline