What does daylight mean?
Daylight is the natural illumination provided by the sun during the hours between sunrise and sunset. It functions both concretely, describing the ambient light that fills outdoor spaces and reaches indoors through windows, and temporally, referring to the span of usable waking hours available for work, travel, and leisure. Because human activity has historically been governed by the availability of daylight, the word carries practical weight: farmers, sailors, photographers, and commuters alike plan their days around how much daylight remains. It appears in well-established idioms such as "in broad daylight," which stresses openness or audacity, and "burning daylight," which means wasting valuable time. Related terms include daylight saving time, the practice of shifting clocks to make better use of evening light. Daylight contrasts naturally with darkness, night, and artificial light, and it often connotes clarity, safety, honesty, and openness, as opposed to the concealment associated with night. It is a common, neutral word found across everyday speech, literature, science, and law.
nounThe natural light of the sun during the day; the period between sunrise and sunset when there is light outside.
- The natural light from the sun during the day.
- The time between sunrise and sunset; daytime hours available for activity.
"We finished painting the fence while there was still plenty of daylight left."
"The room was flooded with soft daylight through the east-facing windows."
"They set out at first light to make the most of the short winter daylight."
Daylight is typically treated as a mass noun and rarely takes a plural form; where a plural is conceptually relevant, it usually applies to "day" rather than "daylight" itself.
"In northern latitudes, the days shorten rapidly after midsummer."
"Burning daylight" — a phrase John Wayne made famous — literally means wasting time, because every hour of usable light that slips by is an hour you can never get back.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of daylight
Daylight is a straightforward English compound formed from the Old English words "dæg" (day) and "leoht" (light), both native Germanic roots rather than borrowings from Latin or French. The compound itself developed in Middle English, combining two words already ancient in the language. It shares its first element with many other native compounds such as daybreak, daytime, and midday, making it part of a distinctly Germanic family of vocabulary within English.
How daylight is actually used
Daylight is used both as a concrete noun (the physical light) and in figurative expressions. "In broad daylight" emphasizes something done openly or shamelessly, often of crimes. "See daylight" can mean to perceive hope of resolution, or in gambling slang, to gain an edge. The compound "daylight saving time" is standard in North America and Australia; British usage also accepts "daylight-saving time" with a hyphen. In informal American speech, "we're burning daylight" means hurrying is needed before dark.
Easily confused with daylight
Daybreak refers specifically to the moment dawn begins, whereas daylight covers the whole span of sunlit hours.
Sunlight is direct rays from the sun, while daylight is the general ambient illumination of daytime, including indirect and reflected light.