Synonyms and related words :
PM, all-absorbing, arch, capital, cardinal, champion, chancellor, chief, chief executive, chief of state, controlling, dewan, doge, dominant, first, foremost, front, grand vizier, head, head of state, highest, highest-ranking, leading, maiden, main, master, overriding, overruling, paramount, predominant, preeminent, president, primary, prime, prime minister, principal, ranking, supreme, top, top-ranking, topmost, uppermost