An '''Achilles' heel''' or '''Achilles heel'''<ref>{{Cite web|url=https://dictionary.cambridge.org/dictionary/english/achilles-heel|title=Achilles heel {{!}} meaning in the Cambridge English Dictionary|website=dictionary.cambridge.org|language=en|access-date=2019-09-29}}</ref><ref>{{Cite web|url=https://www.lexico.com/en/definition/achilles_heel|title=Achilles heel {{!}} Definition of Achilles heel by Lexico|website=Lexico Dictionaries {{!}} English|language=en|access-date=2019-09-29}}</ref> is a weakness in spite of overall strength, which can lead to downfall. While the mythological origin refers to a physical vulnerability, idiomatic references to other attributes or qualities that can lead to downfall are common. | An '''Achilles' heel''' or '''Achilles heel'''<ref>{{Cite web|url=https://dictionary.cambridge.org/dictionary/english/achilles-heel|title=Achilles heel {{!}} meaning in the Cambridge English Dictionary|website=dictionary.cambridge.org|language=en|access-date=2019-09-29}}</ref><ref>{{Cite web|url=https://www.lexico.com/en/definition/achilles_heel|title=Achilles heel {{!}} Definition of Achilles heel by Lexico|website=Lexico Dictionaries {{!}} English|language=en|access-date=2019-09-29}}</ref> is a weakness in spite of overall strength, which can lead to downfall. While the mythological origin refers to a physical vulnerability, idiomatic references to other attributes or qualities that can lead to downfall are common. |