Inanitions, which means a lack of energy or vitality, can be expressed in different words with varying shades of meaning. These include languor, listlessness, lethargy, torpor, apathy, ennui, and exhaustion. Languor suggests a pleasant lethargy or relaxation, while listlessness implies a disinterest or lack of motivation. Lethargy refers to a more severe and prolonged state of sleepiness or sluggishness. Torpor is a term for the dormancy of hibernating animals, and can also refer to a state of mental or physical sluggishness. Apathy suggests a lack of feeling or emotion, while ennui connotes a sense of boredom or weariness. Finally, exhaustion implies complete depletion of energy and reserves.