Why this word is great
UNLUST — [Noun] A state of displeasure, dislike, or listlessness; disinclination. From Middle English unlust, from Old English unlust ("displeasure, dislike"), from Proto-West Germanic *unlust, from Proto-Germanic *unlustuz ("listlessness"), equivalent to un- ("not") + lust ("pleasure, desire"). Unlike "ennui" (which drapes itself in the velvet weariness of the overstimulated) or "aversion" (which recoils with purpose), unlust is the gray weight of absence—the sag of a couch after a guest departs, the cold porridge left to congeal, the way a book falls shut in hands too heavy to turn its pages. It is not the refusal of life, but life refusing to spark.