not open to doubt;
"she wanted to go; that was for sure"
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"
- No one knows for sure what happened to Bill.
- No one knows for sure how people first learned to preserve food.
- I'm sure I don't deserve so much praise.
- I know an infallible cure for hiccups.
- for sure 确定