1. (noun)enterprise, enterprisingness, initiative, go-ahead readiness to embark on bold new ventures
2. (noun)first step, initiative, opening move, opening the first of a series of actions
3. (adj)inaugural, initiative, initiatory, first, maiden serving to set in motion "the magazine's inaugural issue"; "the initiative phase in the negotiations"; "an initiatory step toward a treaty"; "his first (or maiden) speech in Congress"; "the liner's maiden voyage"