Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “nighttime”


noun [U]     /ˈnaɪt.taɪm/
the time in every 24-hour period when it is dark: It's pretty noisy at nighttime. a nighttime curfewDays and times of day
(Definition of nighttime noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of nighttime

Definitions of “nighttime” in other dictionaries

Word of the Day


the quality of knowing someone very well, liking them a lot, and wanting to spend a lot of time together

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More