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Discover LudwigThe phrase "turn against" is correct and can be used in written English.
It means to oppose someone, including your own friends or allies, usually because of a disagreement or conflict. For example: "After the company began to pursue unethical business practices, many of their longtime supporters turned against them."
Dictionary
turn against
verb
To rebel or oppose to something formerly supported.
Exact(58)
Only subsequently did it turn against him.
One class will turn against another.
Can he turn against them?
The powerless turn against the powerful.
To turn against John Boehner: Other Republicans.
He would not turn against his wife.
And they could well turn against him.
Why did critics turn against him?
"Friends turn against friends, and parties turn against their own," he said.
The turn against staple financing appears to be an overreaction.
When prosperity returns, the odds might turn against the bookies.
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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com