adjective
marked by bold determination and readiness for conflict
an aggressive fighter
Synonyms: assertive, assertory, militant, pushful, pushing, pushy, self-assertive
Related Word: belligerent, combative, contentious, scrappy; domineering, imperious, masterful, tough; energetic, hard-hitting, strenuous, vigorous
Contrasted words: passive, unassertive; meek, submissive, yielding