impeccable

1 being entirely without fault or flaw the etiquette expert was celebrated for her absolutely impeccable manners Synonyms absolute, faultless, flawless, ideal, immaculate, perfect, indefectible, irreproachable, letter-perfect, picture-book, picture-perfect, seamless, unblemishedRelated Words consummate, expert, masterly; classic, dandy, excellent, fabulous, fine, first-class, first-rate, grand, great, marvelous (or marvellous), prime, superb, superior, superlative, terrific, top, top-notch, unsurpassed; completed, finished, perfected, polished; complete, entire, intact, whole; mint, unbruised, undamaged, unimpaired, uninjured, unmarred, unspoiled; exceptional, fancy, high-grade, special; airtight, bulletproof; accurate, correct, exact, precise; inerrant, infallible, unerring, unfailingNear Antonyms deficient, inadequate, incomplete, insufficient, wanting; unfinished, unpolished; fallible; blemished, blighted, broken, damaged, defaced, disfigured, impaired, injured, malformed, marred, misshapen, spoiled, vitiated; atrocious, execrable, wretched; imprecise, inaccurate, incorrect, inexact, wrongAntonyms amiss, bad, censurable, defective, faulty, flawed, imperfect, reproachable

2 free from guilt or blame the head of the investigation must be a person of impeccable probity and honesty Synonyms blameless, cleanhanded, clear, faultless, guiltless, innocent, inculpable, irreproachable, lily-whiteRelated Words absolved, acquitted, cleared, exonerated, vindicated; ethical, law-abiding, moral, righteous, upright, virtuousNear Antonyms blamable, blameworthy, censurable, culpable, impeachable, indictable, punishable; accused, impeached, indicted; condemned, convicted; hangdog, shamed, shamefacedAntonyms guilty

3 free from sin the belief that there can be no such thing as an impeccable soul Synonyms innocent, pure, sinless, whiteRelated Words chaste, moral, virgin, virtuous; immaculate, spotless, unblemished, unstained, unsullied; decent, ethical, good, honest, honorable, righteous, upright, virtuous; blameless, guiltlessNear Antonyms lascivious, lecherous, lewd, libidinous, lickerish, lustful, oversexed, unchaste; evil, immoral, iniquitous, reprobate, unrighteous, virtueless, wicked; corrupt, debased, debauched, degenerate, depraved, dissolute, erring, fallen, lost, perverted; condemned, damnedAntonyms impure, peccant, sinful, sinning