Argue down
1-
Meaning: Beat someone in a debate, discussion or argument
Example: The teacher tried to ARGUE the girl DOWN, but she couldn't
2-
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Meaning: Persuade someone to drop the price of something they're selling
Example: She ARGUED him DOWN ten percent
3-
Meaning: Try to persuade people not to accept a proposition, motion, etc
Example: They tried to ARGUE DOWN the proposal