Open English Wordnet
Adverbs
(r)surely, certainly, sure, for sure, for certain, sure enough, sure as shootingdefinitely 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”