Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “Achilles heel”

Achilles heel

noun [C usually singular] uk   /əˌkɪl.iːzˈhiːl/ us  
a small fault or weakness in a person or system that can result in failure: A misbehaving minister is regarded as a government's Achilles heel and is expected to resign.Faults and mistakesWeakness and vulnerability
(Definition of Achilles heel from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of Achilles heel?
Add Cambridge dictionaries to your browser to your website

Definitions of “Achilles heel” in other dictionaries

Translations of “Achilles heel”

Word of the Day

improvisation

a performance that an actor, musician, etc. has not practised or planned

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More