The word you're looking for is "prepone". http://www.oxforddictionaries.com/de/definition/englisch/prepone

If you mean that the meeting will be held earlier than scheduled, you'd say "I will bring the meeting forward". "Let's bring the meeting forward to 10am", for example.

Simon's phrase is the opposite of "I will be late for the meeting". James' answer is the opposite of "(I will be) present for the meeting. Su.Ki's answer is factually accurate but you may have wanted an opposite verb! I suggest: "I will bring forward the meeting" (the meeting will now be earlier than previously planned)

I won't delay the meeting?

The meeting will go ahead as scheduled.