rush hour

noun

: a period of the day when the demands especially of traffic or business are at a peak

Examples of rush hour in a Sentence

We got caught in the morning rush hour.
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.
Traffic to enter and exit the subdivision is often congested during rush hour. March 26, Charlotte Observer, 26 Mar. 2026 The closure for hazmat cleanup is expected to last well into the evening rush hour and possibly beyond that time, police said. Lillie Davidson, Fort Worth Star-Telegram, 25 Mar. 2026 Fenn is giving a route syllabus, safety talk and motivational speech that’s heavy on the realities of a ride through the center of San Francisco that ends near morning rush hour. Peter Hartlaub, San Francisco Chronicle, 13 Mar. 2026 Since the mass firings began, former CDC worker and their supporters have protested every Tuesday during the afternoon rush hour outside the CDC's main entrance. Jess Mador, NPR, 13 Mar. 2026 See All Example Sentences for rush hour

Word History

First Known Use

1878, in the meaning defined above

Time Traveler
The first known use of rush hour was in 1878

Browse Nearby Words

Cite this Entry

“Rush hour.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rush%20hour. Accessed 26 Mar. 2026.

Kids Definition

rush hour

noun
: a period of the day when traffic is very heavy or business is very brisk
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!

More from Merriam-Webster