Meanings
- definitely, positively, without doubt
I would go to that concert for certain.
2 more examples
We'll never be able to know for certain what happened.
- Would you buy one of those? - For certain.
Synonyms: certainly, for a fact, for sure
Synonyms & antonyms
prepositional phrasedefinitely, positively, without doubt
More synonyms by meaning
adverbdefinitely or positively (‘sure’ is sometimes used informally for ‘surely’)
Synonym sets from Open English WordNet, CC BY 4.0.
Translations
Spanish al cierto, de cierto
- al ciertophrase
- de ciertophrase
- en ciertophrase
- de jurophrase
- a jurophrase
- con certeza/certidumbre/certitud/certinidadphrase
Cite this entry
for certain. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/for%20certain
“for certain.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/for%20certain. Accessed November 2, 2026.
WatkinsX Dictionary, s.v. “for certain,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/for%20certain.
Source: for certain on Wiktionary, CC BY-SA 4.0.