sadder but wiser
Unhappy but having learned from one's mistakes, as in Sadder but wiser, she's never going near poison ivy again. The pairing of these two adjectives was first recorded in Samuel Coleridge's The Rime of the Ancient Mariner (1798).
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Words nearby sadder but wiser
Example sentences from the Web for sadder but wiser
I even present some statistical evidence for this cycle of unpleasant shocks followed by sadder-but-wiser recoveries.