greatest

1 coming before all others in importance the greatest achievement in the history of cinema Synonyms arch, big, capital, cardinal, central, chief, dominant, first, grand, great, foremost, highest, key, leading, main, master, number one (also No. 1), numero uno, overbearing, overmastering, overriding, paramount, predominant, 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

2 of the highest degree I have the greatest respect for the selfless medical missionaries working around the world Synonyms full, maximum, top, topmost, utmost, utterRelated Words heightened, highNear Antonyms lessened, lowAntonyms least, littlest, lowest, minimal, minimum, slightest