Scot-free
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Scot-free /skɒtˈfriː/ (adverb) — to get away without suffering punishment or injury.
"On account of your reliance on legal advice clause the useless lawyer who gave you that crappy advice got away with it scot-free".
Etymology: A “scot” or “secot” was a municipal tax in mediaeval England. To go scot-free was to successfully dodge such a tax.