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  1. characterized by lack of seriousness or sense: frivolous conduct.
  2. self-indulgently carefree; unconcerned about or lacking any serious purpose.
  3. (of a person) given to trifling or undue levity: a frivolous, empty-headed person.
  4. of little or no weight, worth, or importance; not worthy of serious notice: a frivolous suggestion.

Origin of frivolous

1425–75; late Middle English < Latin frīvolus worthless, trifling; see -ous
Related formsfriv·o·lous·ly, adverbfriv·o·lous·ness, nounun·friv·o·lous, adjectiveun·friv·o·lous·ly, adverbun·friv·o·lous·ness, noun
Can be confusedfrivolity frivolousness

Synonyms for frivolous

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Antonyms for frivolous Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for frivolously

Historical Examples of frivolously

British Dictionary definitions for frivolously


  1. not serious or sensible in content, attitude, or behaviour; sillya frivolous remark
  2. unworthy of serious or sensible treatment; unimportantfrivolous details
Derived Formsfrivolously, adverbfrivolousness or frivolity (frɪˈvɒlɪtɪ), noun

Word Origin for frivolous

C15: from Latin frīvolus silly, worthless
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 frivolously



mid-15c., from Latin frivolus "silly, empty, trifling, worthless, brittle," diminutive of *frivos "broken, crumbled," from friare "break, rub away, crumble." Related: Frivolously; frivolousness.

Online Etymology Dictionary, © 2010 Douglas Harper