Definition of lassitude noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈlæsɪtjuːd//
; NAmE NAmE//ˈlæsɪtuːd//
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a state of feeling very tired in mind or body; lack of energy I was overcome by lassitude. Word Origin late Middle English: from French, from Latin lassitudo, from lassus ‘tired’.
See the Oxford Advanced American Dictionary entry: lassitude