Learn English – idiom for unintended consequences

expressionsidiomsphrases

I am looking for a phrase/idiom that expresses the risk of unforeseen consequences of an action. Fake context: someone develops a treatment for cancer that is later found to cause Alzheimer's. So far, I have found "better the devil you know…" and "robbing peter to pay paul." Neither quite get this right. Thank you

Best Answer

The idiom out of the frying pan into the fire may suggest what you are referring to:

  • Fig. said when you move from a bad or difficult situation to one that is worse.(Typically: get ~; go ~; jump ~.)

Source: www.dictionary.cambridge.org

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