"advancer" in the noun sense
1. advancer
someone who advances
"advancer" in the adjective sense
1. advance, beforehand
being ahead of time or need
"gave advance warning"
"was beforehand with her report"
2. advance, advanced, in advance
situated ahead or going before
"an advance party"
"at that time the most advanced outpost was still east of the Rockies"
Source: WordNet® (An amazing lexical database of English)
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