nightlong

English

Etymology 1

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

Adjective

nightlong (not comparable)

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

Etymology 2

From Middle English nihtlonge, nihtlonges, from Old English nihtlanges (“for the night”), equivalent to night +‎ -long.

Adverb

nightlong (not comparable)

1. Through the night.