all hours

plural noun

: a very late time
stayed up until all hours

Examples of all hours in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Still living in an Airbnb, her neighbor across the hall is blasting heavy-metal music all hours of the day and night. Maggie Fremont, Vulture, 27 June 2025 Manage Energy, Not Just Time Not all hours are created equal. Julian Hayes Ii, Forbes.com, 23 June 2025 The private, invite-only club is rumored to have gotten its name from an Alfred Tennyson poem of the same name meaning that the club is open all hours and the conversation flows forever, the City Journal reported in 1992. Thomas Tracy, New York Daily News, 26 Mar. 2025 But only two of Chicago’s subways run 24 hours a day, unlike in New York, where most of the train lines runs at all hours every day or have other train lines fill in the gaps. Nic F. Anderson, CNN, 9 Mar. 2025 See All Example Sentences for all hours

Word History

First Known Use

1668, in the meaning defined above

Time Traveler
The first known use of all hours was in 1668

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Cite this Entry

“All hours.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/all%20hours. Accessed 1 Jul. 2025.

Kids Definition

all hours

plural noun
: a very late time
stayed up until all hours
Last Updated: - Updated example sentences
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