turn one's back on(redirected from turn back on)
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turn (one's) back on (someone or something)
To ignore, disregard, or exclude someone or something; to abandon, give up on, or forsake someone or something. It's clear that the company has turned its back on customers. After becoming a successful writer, Jim turned his back on all the people he used to know back home.
turn one's back on
Deny, reject; also abandon, forsake. For example, I can't turn my back on my own daughter, no matter what she's done, or He simply turned his back on them and never gave it a second thought. [c. 1400] Also see when one's back is turned.