Synonym word of most principal:

arch, capital, cardinal, champion, chief, controlling, crowning, dominant, essential, first, foremost, greatest, head, highest, incomparable, key, leading, main, mainline, major, matchless, maximum, outstanding, paramount, peerless, predominant, preeminent, premier, prevailing, primary, prime, prominent, second-to-none, sovereign, star, stellar, strongest, supereminent, superior, supreme, transcendent, unapproachable, unequaled, unparalleled, unrivaled


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Synonyms:  A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | Popular