For certain
For certain adverb - Definitely or positively (`sure' is sometimes used informally for `surely').
Probably and for certain are semantically related. In some cases you can use "Probably" instead an adverb phrase "For certain".
Probably
Probably adverb - By reasonable assumption.
For certain and probably are semantically related. Sometimes you can use "For certain" instead an adverb "Probably".
Nearby Words: probable, probability
Mutual synonyms
Related pairs
- precisely and for certain
- precisely and probably
- truly and for certain
- truly and probably
- absolutely and for certain
- absolutely and probably
- positively and for certain
- positively and probably
- definitely and for certain
- definitely and probably
- indeed and for certain
- indeed and probably
- plainly and for certain
- plainly and probably
Both terms in one sentence
-
Nobody knows for certain and probably never will.
Source: Riddle for the Ages -
There's probably more as well but since they don't release most of their lyrics only the band is likely to know for certain.
Source: Creator / Aleister Crowley - To be fair, he probably would have married her on his own if not for certain... issues he has with his sister.
Source: Give the Baby a Father
Cite this Source
Probably and For certain. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/for_certain/probably
For certain & Probably. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/for_certain/probably>.
Probably or For certain. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/for_certain/probably.
Google Ngram Viewer shows how "for certain" and "probably" have occurred on timeline