preponderant

adj. superior; supreme; more numerous; heavier; predominant; overwhelming

Adjective
1. having superior power and influence; "the predominant mood among policy-makers is optimism"
(synonym) overriding, paramount, predominant, predominate, preponderating
(similar) dominant

adj. preponderant, overriding, leading

(a.)
Preponderating; outweighing; overbalancing; -- used literally and figuratively; as, a preponderant weight; of preponderant importance.
  

Synonyms and related words:
arch, ascendant, at the head, banner, boss, capital, cardinal, central, champion, chief, commanding, controlling, crowning, dominant, first, focal, foremost, general, governing, great, head, headmost, hegemonic, hegemonistic, in ascendancy, in charge, in chief, in the ascendant, leading, magisterial, main, master, on the throne, overbearing, overruling, paramount, predominant, predominate, preeminent, prepollent, preponderate, prepotent, prevailing, prevalent, primal, primary, prime, principal, ranking, regnant, regulating, regulative, regulatory, reigning, ruling, sovereign, star, stellar, supereminent, supreme, swaying, topflight