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

To be the president of the United States is to be on call all hours of the day. — Nicole Kliest, Vogue, 26 July 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

During the World Cup in 2022, China already accounted for nearly half of all hours of viewing on digital and social platforms globally, according to FIFA. — Evelyn Cheng, CNBC, 15 June 2026

Hell’s Kitchen resident Terrell Drummond, who opposed siting the drop-in center there, said homeless people hang around outside the place all hours of the night. — Colin Mixson, New York Daily News, 2 May 2026

Word History

First Known Use

1668, in the meaning defined above

Rhymes for all hours

• bowers
• flours
• flowers
• gowers
• ours
• scours
• showers
• sours
• towers
• cauliflowers
• overpowers
• superpowers

Kids Definition

all hours

plural noun

: a very late time

stayed up until all hours