fatuous

[ fach-oo-uhs ]
/ ˈfætʃ u əs /

adjective

foolish or inane, especially in an unconscious, complacent manner; silly.
unreal; illusory.

Origin of fatuous

1625–35; < Latin fatuus silly, foolish, idiotic; see -ous

SYNONYMS FOR fatuous

1 dense, dull, dim-witted. See foolish.

Related forms

fat·u·ous·ly, adverbfat·u·ous·ness, noun
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Examples from the Web for fatuous

British Dictionary definitions for fatuous

fatuous

/ (ˈfætjʊəs) /

adjective

complacently or inanely foolish

Derived Forms

fatuously, adverbfatuousness, noun

Word Origin for fatuous

C17: from Latin fatuus; related to fatiscere to gape
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