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

3 senses of lassitude

Sense 1
lethargy, lassitude, sluggishness -- (a state of comatose torpor (as found in sleeping sickness))
       => torpor, torpidity -- (a state of motor and mental inactivity with a partial suspension of sensibility; "he fell into a deep torpor")

Sense 2
languor, lassitude, listlessness -- (a feeling of lack of interest or energy)
       => apathy -- (an absence of emotion or enthusiasm)

Sense 3
inanition, lassitude, lethargy, slackness -- (weakness characterized by a lack of vitality or energy)
       => weakness -- (the property of lacking physical or mental strength; liability to failure under pressure or stress or strain; "his weakness increased as he became older"; "the weakness of the span was overlooked until it collapsed")