Synonyms of awesome

1 Syllable
boss, mean, swell, grand, fab
2 Syllables
doughtier, nervous, eerier, doughty, hairy, bossing, fearful, daunting, whiz-bang, fabber, wondrous, striking, sweller, dreadful, bosser, frantic, turn-on, awful, shocking, mondo, grabber, bossed, whizbang, moving, stunning, whaler
3 Syllables
tremendous, majestic, alarming, unwonted, empyreal, hellacious, terrible, amazing, terrific, beautiful, frightening, fearsome, terrifying, ballbuster, horrible, stupefying, exalted, horrendous, breathtaking, mind-blowing, wonderful, marvelous, imposing, unusual, horrifying, fabulous
4 Syllables
monumental, awe-inspiring, fantastical, redoubtable, formidable, impressive, magnificent, astonishing, miraculous, overwhelming, wonderworking
5 Syllables
unordinary, intimidating