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English definition of “(as) tough as old boots”

(as) tough as old boots

very strong, and not easily made weaker: He might be in his eighties but he's tough as old boots, that man. (US also (as) tough as shoe leather) informal describes food that is very difficult to cut or eat
(Definition of (as) tough as old boots from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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Translations of “(as) tough as old boots”

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