✨📕 The NEWThe NEW Collegiate Dictionary, 12th Edition Over 5,000 words added — Buy Now! Collegiate DictionaryBuy Now!

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.
In RiNo, people sleep in on Saturdays and Sundays and use Upswell during all hours on the weekdays, Holland said. Max Scheinblum, Denver Post, 26 Nov. 2025 This statistic does mean, however, that advertisers are intentionally trying to reach us, at almost all hours of the day. Jennifer Farmer, Rolling Stone, 25 Nov. 2025 The emails came at all hours of the day and night from the world’s rich and powerful. Josh Meyer, USA Today, 15 Nov. 2025 Others complained about trucks coming at all hours of the night to pick up Arte Cafe’s trash. Clio Chang, Curbed, 14 Oct. 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

Browse Nearby Words

Cite this Entry

“All hours.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/all%20hours. Accessed 29 Nov. 2025.

Kids Definition

all hours

plural noun
: a very late time
stayed up until all hours
Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!