Impeccable
/ˌɪˈmpɛkəbəl/
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Definition
(adj) Perfect, without faults, flaws or errors
Sentence Examples
He has impeccable manners, which means you can never be sure what he actually thinks!
Only the most impeccable dishes are served to the royal family.
CEFR Practice Quiz
She had an ____ sense of style and always looked perfectly dressed for every occasion.