predominant

coming before all others in importance parental involvement has been found to be the predominant factor in a child's success in school Synonyms arch, big, capital, cardinal, central, chief, dominant, first, grand, great, greatest, highest, key, leading, main, master, number one (also No. 1), numero uno, overbearing, overmastering, overriding, paramount, foremost, preeminent, premier, primal, primary, principal, prior, sovereign (also sovran), supremeRelated Words distinguished, eminent, illustrious, noble, notable, noteworthy, outstanding, prestigious, signal, star, stellar, superior; high-level, senior, top; important, influential, major, mighty, momentous, significant; incomparable, matchless, unequaled (or unequalled), unparalleled, unsurpassed; celebrated, famed, famous, renownedNear Antonyms inconsequential, inconsiderable, insignificant, minor, negligible, slight, trifling, trivial, unimportant; collateral, inferior, secondary, subordinate, subsidiaryAntonyms last, least