she wanted to go; that was for sure
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
* * *
I can't say for sure what George really wanted
* * *
No one knows for sure [=for certain] what happened.
That was a mistake for sure. = That for sure was a mistake.
(US, informal) “Do you want to come to the party?” “For sure.” [=I certainly do]
“We don't want that to happen again.” “That's for sure!” [=that is certainly true]
* * *
•
No one knows for sure what happened.
•
I think he'll be back on Monday, but I can't say for sure.
•
One thing is for sure— it's not going to be easy.
Useful english dictionary. 2012.