for certain meaning and definition

FOR CERTAIN adverb

Definition of for certain (adverb)

1. definitely or positively (`sure' is sometimes used informally for `surely')
   • "the results are surely encouraging"; "she certainly is a hard worker"; "it's going to be a good day for sure"; "they are coming, for certain"; "they thought he had been killed sure enough"; "he'll win sure as shooting"; "they sure smell good"; "sure he'll come"
   • synonyms: certainly, for sure, sure, sure as shooting, sure enough, surely