| superb(adjective, good, great, sound, excellent) |
| superlative(adjective, excellent, delicate, pure, superb) |
| ultimate(adjective, perfect, superb, expert, skilled) |
| unadulterated(flawless, faultless, textbook, unspoiled, uncontaminated) |
| uncorrupted |
| undamaged(adjective, sound, perfect, flawless, faultless) |
| unexceptionable(adjective, bright, clean, perfect, acceptable) |
| unimpaired(adjective, sound, perfect, flawless, faultless) |
| unmixed(flawless, faultless, textbook) |
| unspotted(good, clear, correct, clean, perfect) |
| upright(adjective, good, clear, clean, honest) |
| whole(adjective, sound, correct, clean, perfect) |
| above suspicion(expression, adjective, good, clear, honest) |
| acceptable(adjective, sound, flawless, faultless, inoffensive) |
| according to Hoyle(expression, idiom, right, perfect, exact) |
| aces(adjective, perfect, pure, splendid, flawless) |
| acme(adjective, perfect) |
| actual(right, perfect, exact, proper, true) |
| adept(adjective, pure, splendid, flawless, faultless) |
| agreeable(adjective, sound, smooth, polite, acceptable) |