THESAURUS
armipotent, ascendant, at the head, authoritative, boss, chief, cogent, commanding, controlling, dominant, dynamic, effective, energetic, forceful, forcible, general, governing, head, hegemonic, hegemonistic, high-potency, high-powered, high-pressure, high-tension, in ascendancy, in charge, in chief, in force, in power, in the ascendant, irresistible, leading, master, mighty, mighty in battle, on the throne, operative, paramount, potent, powerful, predominant, predominate, prepollent, preponderant, preponderate, prevailing, prevalent, puissant, regnant, regulating, regulative, regulatory, reigning, ruling, sovereign, striking, strong, supreme, swaying, telling, valid, vigorous, vital