Other forms: sunsets
Sunset is the moment the sun drops below the horizon, and the light and colour that go with it. Watch the sunset, at sunset, a beautiful sunset.
It is countable when a particular one is meant and uncountable in phrases like at sunset, which takes no article. Sunrise is its exact opposite, and dusk and twilight describe the fading light rather than the moment. Note the compound sunset clause, which in law means a provision that expires automatically on a set date, and ride off into the sunset, which is a film ending and means to leave happily and for good.
1nounsunsetThe time when the sun goes below the horizon.
“We should be back before sunset.”
2nouncoloursThe colours in the sky at that time.
“There was an extraordinary sunset over the estuary.”
Too few real examples of this word to estimate which sense is commonest.
sunset is a time of day.
Also accepted in games: dusk
Middle English
son-sett
English, today
sunset
From Middle English son-sett, Sonne set, equivalent to sun + set. In Gower's Confessio Amantis, before 1393.
Etymology from Wiktionary, CC BY-SA