Synonyms of out-of-this-world

1 Syllable
tops, boss, cool, main, great, crack, chief, bad, star
2 Syllables
famous, special, primo, major, world-class, perfect, a-1, far-out, mostest, well-known, standout, steller, turn-on, ace, super, greatest
3 Syllables
outstanding, important, preeminent, principal, defectless, capital, idyllic, superior, eventful, eminent, hundred-proof, momentous, out-of-sight, unflawed, dominant, fabulous
4 Syllables
predominant, phenomenal, exceptional, celebrated, impressive, magnificent, a-number-1, distinguished, meritorious
5 Syllables
indefectible, superlative