go before, come first, be ahead of, take precedence over, preface, introduce, usher in, ring in, herald, forerun, antecede, head, lead, run ahead, go ahead, scout, light the way, go in advance, come before, antedate, come to the front, forge ahead, head up*.
Antonyms succeed*, come after, come last.
To come, exist, or occur before in time:antecede, antedate, predate. See precede
To begin (something) with preliminary or prefatory material:introduce, lead, preface, usher in. See start, words