Definition of “Achilles heel” - English Dictionary

british dictionary

“Achilles heel” in British English

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(Definition of “Achilles heel” from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

“Achilles heel” in American English

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Achilles heelnoun [ C usually sing ]

us /əˌkɪl·iz ˈhil/

a weak point in a person or system that can result in its failure

(Definition of “Achilles heel” from the Cambridge Academic Content Dictionary © Cambridge University Press)