निश्चित रूप से।

यह काम आज अवश्य होना चाहिए।
अवश्य, जरूर, ज़रूर, पक्का

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.
certainly, for certain, for sure, sure, sure as shooting, sure enough, surely