Greek origin


A fatal weakness in an otherwise strong person or thing.

JFK’s Achilles heel was his inability to ignore the charms of a long-legged blonde.

The United Kingdom – 19th century.

Worldwide, but more commonly amongst the older generation.


An imaginary idealistic state where everything is perfect. It is usually used with reference to someone who has an overly optimistic and unrealistic belief.

If you think you can get a managerial job without any qualifications or experience you are living in cloud cuckoo-land.

‘Cloud cuckoo-land’ derives from a comment made by was coined by the 4th century BC Greek playwright Aristophanes in the whimsical and extravagant play The Birds. First used in English in the 1820s, in the United Kingdom.

Worldwide.

Gary Martin is a writer and researcher on the origins of phrases and the creator of the Phrase Finder website. Over the past 26 years more than 700 million of his pages have been downloaded by readers. He is one of the most popular and trusted sources of information on phrases and idioms.

Gary Martin

Writer and researcher on the origins of phrases and the creator of the Phrase Finder website. Over the past 26 years more than 700 million of his pages have been downloaded by readers. He is one of the most popular and trusted sources of information on phrases and idioms.