Origin of overnight

Middle English word dating back to 1325–75; see origin at over-, night

British Dictionary definitions for overnighted

overnight

adverb (ˌəʊvəˈnaɪt)

for the duration of the night we stopped overnight
in or as if in the course of one night; suddenly the situation changed overnight

adjective (ˈəʊvəˌnaɪt) (usually prenominal)

verb (intr)

to stay the night