Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun overnighter

2 senses of overnighter

Sense 1
overnighter -- (a guest who stays overnight)
       => guest -- (a customer of a hotel or restaurant etc.)

Sense 2
overnighter, overnight bag, overnight case -- (a small traveling bag to carry clothing and accessories for staying overnight)
       => bag, traveling bag, travelling bag, grip, suitcase -- (a portable rectangular container for carrying clothes; "he carried his small bag onto the plane with him")