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nightlong

/ˈnaɪt.lɒŋ/ adjective

adjective Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about nightlong at Wordnik → Where our words come from →

  1. Lasting a night (i.e. the duration of one night); lasting all night.

adverb

  1. Through the night.

Origin

From Middle English *nihtlong, from Old English nihtlang (“lasting through the night, night-long, a night in length”), equivalent to night + -long.

From Wiktionary, via Kaikki.org (CC BY-SA)