Adjective
infallible
IPA /ɪnˈfæləbl/
Always correct and never making a mistake in judgement or advice.
See example sentence: infallible
Even the most experienced cook is not infallible.
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Adjective
impeccable
IPA /ɪmˈpekəbl/
So carefully done or presented that there are no noticeable mistakes or faults.
See example sentence: impeccable
His impeccable manners made every guest feel welcome at the dinner.
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