1. (a.) Serving to initiate; inceptive; initiatory; introductory; preliminary.

2. (n.) An introductory step or movement; an act which originates or begins.

3. (n.) The right or power to introduce a new measure or course of action, as in legislation; as, the initiative in respect to revenue bills is in the House of Representatives.

abecedarian aboriginal adventuresomeness adventurousness aggression aggressiveness alpha ambition ambitiousness antenatal autochthonous bang baptismal beginning breaking-in budding constitutional referendum creative dash direct initiative drive dynamism elan elemental elementary embryonic energy enterprise enterprisingness facultative referendum fetal fire first first blush first glance first impression first inning first lap first move first round first sight first stage first step force forcefulness formative foundational fundamental gambit gestatory get-up-and-get get-up-and-go getup ginger go go-ahead go-getting go-to-itiveness gumption hustle in embryo in its infancy in the bud inaugural inceptive inchoate inchoative incipient incunabular indirect initiative infant infantile initial initiatory introductive introductory inventive kick le premier pas lead leadership mandate mandatory referendum nascent natal opening move original parturient pep pepper piss and vinegar pizzazz plebiscite plebiscitum poop postnatal pregnant prenatal primal primary prime primeval primitive primitiveness primitivity primogenial procreative punch push pushfulness pushiness pushingness recall referendum resourcefulness rudimental rudimentary snap spirit spunk starch statutory referendum thrust up-and-comingness ur venturesomeness venturousness verve vigor vim warming-up zing zip