Twilight Definition

twīlīt

noun

The subdued light just after sunset or, in less common usage, just before sunrise.

Webster's New World

The diffused light from the sky during the early evening or early morning when the sun is below the horizon and its light is refracted by the earth's atmosphere.

American Heritage

The period from sunset to dark.

Webster's New World

Any growing darkness.

Webster's New World

Dim or diffused illumination.

American Heritage

Synonyms:

Antonyms:

Antonyms:
daybreak
sunrise

adjective

Of or like twilight; dim, obscure, etc.

Webster's New World

Synonyms:

Other Word Forms of Twilight

Noun

Singular:

twilight

Plural:

twilights

Origin of Twilight

From Middle English twilight, twyelyghte, from Old English twÄ“onelÄ“oht (“twilight"), equivalent to twi- (“double, half-") +"Ž light, literally "˜second light, half-light'. Cognate to Scots twa licht, twylicht, twielicht (“twilight"), Low German twilecht, twelecht (“twilight"), Dutch tweelicht (“twilight, dusk"), German Zwielicht (“twilight, dusk").

From Wiktionary
Middle English twilighte Old English twi- two, half dwo- in Indo-European roots Old English līht light light¹

From American Heritage Dictionary of the English Language, 5th Edition