To make someone feel awkward, self-conscious, or ashamed, usually in front of others.
From French 'embarrasser' (em- 'in' + barrasse 'obstruction'), originally a Portuguese nautical term meaning to hamper or obstruct. The sense shifted from physical obstruction to social discomfort.
The word originally meant to literally block or obstruct something, which perfectly explains why embarrassment feels like an obstacle in your throat—your body is literally blocking normal communication when you're mortified.
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