Synonyms and related words :
adventuresomeness, adventurousness, aggression, aggressiveness, ambitiousness, bang, dash, drive, dynamism, enterprise, enterprisingness, fire, force, forcefulness, get-up-and-get, getup, ginger, go, go-ahead, go-getting, go-to-itiveness, gumption, hustle, initiative, kick, pep, pepper, piss and vinegar, pizzazz, poop, punch, push, pushfulness, pushiness, pushingness, snap, spirit, spunk, starch, thrust, up-and-comingness, venturesomeness, venturousness, verve, vim, zing, zip