a month of Sundays

noun phrase

informal

: a very long time

Word History

First Known Use

1759, in the meaning defined above

Time Traveler

The first known use of a month of Sundays was in 1759

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Style

“A month of Sundays.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/a%20month%20of%20Sundays. Accessed 12 Mar. 2026.

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Last Updated: 24 Feb 2026 - Definition revised

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a month of Sundays

noun phrase

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