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[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 Dictionary, © Random House, Inc. 2015.
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Examples from the Web for lassitude
Contemporary Examples
Historical Examples
  • The feeling was accompanied by a sense of torpor and lassitude—like that experienced by one dropping to sleep in a snow-storm.

    The Wild Huntress Mayne Reid
  • Up to the moment of that discovery, all was lassitude and indifference.

    Confessions Of Con Cregan Charles James Lever
  • The air was full of life and vigor, and she had no sense of lassitude.

    Mariquita John Ayscough
  • But all the blue forces were broken, disorganized; there came an exhaustion, a lassitude.

    The Long Roll Mary Johnston
  • He was in a sort of hot-cold humor over it, in a fever-fit that had a way of turning into lassitude.

    The Branding Iron Katharine Newlin Burt
British Dictionary definitions for lassitude


physical or mental weariness
Word Origin
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
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Word Origin and History for lassitude

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).

Online Etymology Dictionary, © 2010 Douglas Harper
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lassitude in Medicine

lassitude las·si·tude (lās'ĭ-tōōd', -tyōōd')
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.
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