Impeccable

//ɪmˈpɛkəbəl// adj

adj ·Moderate ·College level

Definitions

Adjective
  1. 1
    Perfect, without faults, flaws or errors

    "He grew up in Norway, but he writes impeccable English."

  2. 2
    Incapable of wrongdoing or sin; immaculate

    "It was easy for James V to imprison Lady Glamis, but actually convicting her was far more difficult; her character was impeccable and she was highly respected by all who knew her."

Adjective
  1. 1
    without fault or error wordnet
  2. 2
    not capable of sin wordnet

Synonyms

All synonyms
flawlessimmaculateinfallibleperfectsinlessstainless

Antonyms

All antonyms
flawed

Example

More examples

"He has impeccable manners, which means you can never be sure what he actually thinks!"

Etymology

From Middle French impeccable, from Latin impeccabilis (“not liable to sin”), from im- (“not”) + peccare (“to err, to sin”).

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.