Learn useful ways to say "know for a" in English with drama examples and natural alternatives.

This means the speaker is denying any real relationship or familiarity with the other person.
From The Unforgettable Love, Episode 8
The speaker is emphasizing that they do not know the other person at all.
Use it to reject unwanted familiarity or to clarify that you are not acquainted. It can sound cold if said sharply.
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