Learn what "you must be mistaken" means, when people say it, and how to use it naturally in English.

This means the speaker thinks the other person is wrong.
From The Winter Veil, Episode 8
Someone rejects another person's claim and suggests they are wrong.
Use it to politely disagree or correct someone. It can sound a little cool or dismissive if said too directly.
Scenes unlock real expressions as you watch
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