Lassitude
Pronunciation : Las"si*tude
Part of Speech : n.
Etymology : [L. lassitudo, fr. lassus faint, weary; akin to E. late: cf. F. lassitude. See Late.]
Definition : Defn: A condition of the body, or mind, when its voluntary functions are performed with difficulty, and only by a strong exertion of the will; languor; debility; weariness. The corporeal instruments of action being strained to a high pitch . . . will soon feel a lassitude. Barrow.
Source : Webster's Unabridged Dictionary, 1913