| super(adjective, bad, great, excellent, solid) |
| superb(adjective, excellent) |
| superior(adjective, bad, great, excellent, wonderful) |
| surpassing(great, excellent, extraordinary, outstanding, notable) |
| terrible(great, extraordinary, outstanding, notable, unforgettable) |
| terrific(adjective, great, excellent, wonderful, exceptional) |
| tops(adjective, bad, great, excellent, superior) |
| unforgettable(great, extraordinary, outstanding, notable) |
| unfrequent(adjective, rare) |
| unheard of(adjective, rare) |
| unlikely(adjective, rare) |
| unparalleled |
| unrivaled |
| urgent(big, significant, substantial, valuable, vital) |
| vital(big, significant, substantial, valuable, imperative) |
| weighty(big, significant, substantial, valuable, vital) |
| well-known(adjective, bad, great, excellent, superior) |
| world-class(adjective, bad, great, excellent, superior) |
| world class(adjective, informal, american) |
| adulterated |