[ las-i-tood, -tyood ]
/ ˈlæs ɪˌtud, -ˌtyud /


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.

Origin of lassitude

1525–35; < Latin lassitūdō weariness, equivalent to lass(us) weary + -i- -i- + -tūdō -tude Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Examples from the Web for lassitude

British Dictionary definitions for lassitude

/ (ˈlæsɪˌtjuːd) /


physical or mental weariness

Word Origin for lassitude

C16: from Latin lassitūdō, from lassus tired
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for lassitude

[ lăsĭ-tōōd′ ]


A state or feeling of weariness, diminished energy, or listlessness.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.