| untainted(pure, splendid, flawless, faultless, textbook) |
| untarnished(pure, splendid, flawless, faultless, textbook) |
| utopian(pure, splendid, flawless, faultless, textbook) |
| utterly |
| with a vengeance(expression, idiom) |
| without parallel |
| world-class(excellent, select, singular, supreme, unparalleled) |
| world class(expression, excellent, perfect, select, unrivaled) |
| Grade A(expression, adjective, top, superlative, greatest) |
| accurate(flawless, faultless, textbook) |
| acutely |
| appropriate(flawless, faultless, textbook) |
| certain(flawless, faultless, textbook) |
| champ(adjective, rare, singular, supreme, unparalleled) |
| choate(adjective, flawless, faultless, textbook, unspoiled) |
| choice(select, meritable, unparalleled) |
| close(flawless, faultless, textbook) |
| complete(adjective, flawless, faultless, textbook, unspoiled) |
| completed(flawless, faultless, textbook) |
| correct(flawless, faultless, textbook) |