Definitely or positively ('sure' is sometimes used informally for 'surely'). Synonyms:certainly, for certain, for sure, sure, sure enough, surely."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"
