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.
People walk freely in Sayulita all hours of the night and day. — Chicago Tribune, 7 Mar. 2026 Doctors and nurses are available all hours of the day. — Rachel Royster, Fort Worth Star-Telegram, 10 Mar. 2026 During the black tenting period, two members of each group must be present during all hours of the day (while others attend classes), but 10 must sleep there every night. — Storey Wertheimer, NBC news, 20 Mar. 2026 As stated in promotional materials for the documentary, most American moms don’t want to milk their own cow or stay up working all hours of the night after their kids go to bed. — Emily Kelleher, InStyle, 22 June 2026 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

Rhymes for all hours

See All Rhymes for all hours

Browse Nearby Words

all hell breaks loose
all hours
alliable
See all Nearby Words

Cite this Entry

“All hours.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/all%20hours. Accessed 7 Jul. 2026.

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Kids Definition

all hours

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