For sure
For sure adverb - Definitely or positively (`sure' is sometimes used informally for `surely').
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Synonyms for For sure
Really and for sure are semantically related. in definitely topic. In some cases you can use "Really" instead an adverb phrase "For sure".
Mutual synonyms
Both terms in one sentence
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Running Gag: Absolutely, positively, unquestionably, undeniably, the very very very last of The Cracked Lens (and we really really mean it this time, for sure!), part IX.
Source: Magazine / Cracked - Other than the basic fact of Ryu hitting Sagat really, really hard, we're never going to know for sure what actually happened.
Source: Cryptic Background Reference - There is really no way to know for sure, only that the events surrounding the moment when it would have occurred, if it did, really did happen.
Source: Ambiguous Situation
Cite this Source
Really and For sure. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/for_sure/really
For sure & Really. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/for_sure/really>.
Really or For sure. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/for_sure/really.
Google Ngram Viewer shows how "for sure" and "really" have occurred on timeline