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throw someone or something over someone or something
to toss someone or something over someone or something; to lay someone or something across someone or something. The wrestler picked his opponent up and threw him over the referee. He threw his opponent over the ropes.
throw someone over
to end a romance with someone. Jane threw Bill over. I think she met someone she likes better. Bill was about ready to throw her over, so it's just as well.
throw someone over (for someone else)
to break up with a lover in order to take another lover. Sarah threw Jason over for Larry. She threw over Jason for Walter.
Reject, abandon, as in They'd lived together for a year when she suddenly threw him over and moved out. This idiom, possibly alluding to throwing something or someone overboard, was first recorded in 1835.
1. To overturn someone or something forcefully: The kids threw the cart over. A strong gust of wind threw over the sailboat.
2. To abandon someone or something: She threw over her boyfriend of four years. He threw over the company he founded and moved to a ranch.
3. To reject someone or something: She threw over our idea, calling it ridiculous. They wanted us to implement the new policy, but we threw it over.