throw over
verb1
To discard or give up (a plan or project, etc.).
- I failed to strike anything of any benefit at all, and I became entirely disgusted and threw the whole thing over.1909, Transactions of the Minnesota State Horticultural Society:
2
To break off relations with (a friend, romantic partner etc.).
- The girl he was engaged to at Clapton Hill tried to get it out of him, and threw him over partly because he refused, and partly because, as she said, he fairly gave her the "'ump."1901, H G Wells, Mr Skelmersdale in Fairyland:
- Look here Vita—throw over your man, and we'll go to Hampton Court and dine on the river together and walk in the garden in the moonlight[…]c. 1927, Virginia Woolf, The Complete Works of Virginia Woolf: