night and day

adverb

: all the time : continually

Examples of night and day in a Sentence

night and day she reminded him that if it weren't for her, he'd be a nobody
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.
Before And After Digitization: A Compliance Transformation When manufacturers shift from manual compliance to a digital system, the difference is night and day. Jerry Dolinsky, Forbes.com, 18 July 2025 In an environment where lunar dust gets into every nook and cranny, and where temperature fluctuations between night and day can be as great as 482 degrees Fahrenheit (250 Celsius), the risk of breakdown only increases as more moving parts enter the equation. Keith Cooper, Space.com, 17 July 2025 Once solar time in Greenwich had been carried, night and day, around the spinning globe, time became highly abstracted, cut away from its animal home so as to be more easily figured both geologically and evolutionarily. Lewis Hyde, Harpers Magazine, 18 June 2025 The plan is to have the cars showing steady blue lights, all night and day, by July 1. Eric Adler, Kansas City Star, 4 June 2025 See All Example Sentences for night and day

Word History

First Known Use

before the 12th century, in the meaning defined above

Time Traveler
The first known use of night and day was before the 12th century

Browse Nearby Words

Cite this Entry

“Night and day.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/night%20and%20day. Accessed 1 Aug. 2025.

Last Updated: - Updated example sentences
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