majestic
august, awesome, dignified, elevated, exalted, grand, grandiose, imperial, imposing, impressive, kingly, lofty, magnificent, monumental, noble, pompous, princely, regal, royal, splendid, splendiferous (facetious) stately, sublime, superb
Antonyms
humble, ignoble, lowly, mean, modest, ordinary, unassuming, undistinguished, unimposing