What is the opposite of postpone? [duplicate]

Possible Duplicate:
How do I say “Our meeting is preponed”?

A friend of mine asked me this question, and it caught my curiosity.

Is there an explicit opposite of the word postpone? As in, do something in advance? Clearly what I just said is functionally equivalent to the answer I am seeking, but I was wondering if there was a single word that is the antonym.

More context: Bob was supposed to start work in July, but due to a work visa issue, he had to begin in advance.

The most business-speaky option is expedite. Other alternatives include accelerate, hasten, and advance.

Technically prepone is in fact the precise antonym, but I honestly wouldn't be caught dead using it.

I think the best antonym is "bring forward".