1. absolutely certain;

"it is sure as shooting that they will come"

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"