used to say that sth happened as expected; Used colloquially to stress that something is really true or will definitely happen (certainly, really), without reporting that an expectation was fulfilled.; Said on its own to agree to a request or confirm what was just said (certainly; I will; that's right).
Oxford69% of films
used to say that sth happened as expected
So, he picks up the bat with his teeth and Ted's like, "Okay", and he throws him a few, and sure enough...
Editorial23% of films
Used colloquially to stress that something is really true or will definitely happen (certainly, really), without reporting that an expectation was fulfilled.
And in this here snow it sure enough warms your ass up
Editorial8% of films
Said on its own to agree to a request or confirm what was just said (certainly; I will; that's right).
Definitions from the Oxford Advanced Learner's Dictionary, 9th edition