impeccable

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

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

The grounds were impeccable, a Japanese Versailles. — Terminal Compromise, Winn Schwartau
James, an impeccable English valet, waited on "his lordship," and never spoke unless spoken to. — The Martian: A Novel, George Du Maurier
An impeccable widow was she, speaking with a broad A, and dressed exquisitely in a black satin evening gown. — The Trail of the Hawk: A Comedy of the Seriousness of Life, Sinclair Lewis

faultless, immaculate

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