[ 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.

Nearby words

  1. lassalle, ferdinand,
  2. lassen peak,
  3. lassen volcanic national park,
  4. lassi,
  5. lassie,
  6. lasso,
  7. lasso, orlando di,
  8. lassus,
  9. lassus, orlandus,
  10. lassus, roland de

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. 2019

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

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

Medicine 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.