- weariness of body or mind from strain, oppressive climate, etc.; lack of energy; listlessness; languor.
- a condition of indolent indifference: the pleasant lassitude of the warm summer afternoon.
- physical or mental weariness
n.early 15c., from Middle French lassitude (14c.), from Latin lassitudinem (nominative lassitudo) “faintness, weariness,” from lassus “faint, tired, weary,” from PIE *led- “slow, weary” (cf. Old English læt “sluggish, slow;” see late (adj.)), from root *le- “to let go, slacken” (see lenient). n.
- A state or feeling of weariness, diminished energy, or listlessness.