[ non-shuh-lahnt, non-shuh-lahnt, -luhnt ]
/ ˌnɒn ʃəˈlɑnt, ˈnɒn ʃəˌlɑnt, -lənt /


coolly unconcerned, indifferent, or unexcited; casual: His nonchalant manner infuriated me.

Nearby words

  1. nonce word,
  2. nonce-word,
  3. noncellular,
  4. noncellulosic,
  5. nonchalance,
  6. nonchalantly,
  7. nonchromaffin paraganglioma,
  8. nonchromosomal,
  9. nonclassical,
  10. noncling

Origin of nonchalant

1725–35; < French nonchalant, present participle of obsolete nonchaloir to lack warmth (of heart), be indifferent, equivalent to non- non- + chaloir < Latin calēre to be warm. See -ant

Related formsnon·cha·lant·ly, adverb Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for nonchalant

British Dictionary definitions for nonchalant


/ (ˈnɒnʃələnt) /


casually unconcerned or indifferent; uninvolved
Derived Formsnonchalance, nounnonchalantly, adverb

Word Origin for nonchalant

C18: from French, from nonchaloir to lack warmth, from non- + chaloir, from Latin calēre to be warm

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 nonchalant



1734, from French nonchalant, present participle of nonchaloir "be indifferent to, have no concern for" (13c.), from non- "not" (see non-) + chaloir "have concern for," ultimately from Latin calere "be hot" (see calorie). French chaland "customer, client" is of the same origin. Related: Nonchalantly.

Online Etymology Dictionary, © 2010 Douglas Harper