wistful

adj.

[1]	pensive , melancholy , mournful , sad , morose , sorrowful , disconsolate , heartsick , forlorn , woeful , woebegone , desirous , longing , yearning
[2]	thoughtful , contemplative , pensive , absent-minded , detached , absorbed , in a brown study , preoccupied , meditating , meditative , reflective , ruminating , ruminative , dreamy , dreaming , day-dreaming , musing