From Longman Dictionary of Contemporary Englishspiritlessspir‧it‧less /ˈspɪrətləs/ adjective 1 DETERMINED#having no energy or determination2 SAD/UNHAPPYnot cheerful
Examples from the Corpus
spiritless• At this murky hour the luxurious hotel had a seedy, spiritless air, matching our mood.• spiritless celebrations• Lilian Arkwright grew up into a pallid, spiritless child; there was nothing notable about her except her curious teeth.• Ruth and I played a spiritless game of Scrabble. 