from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Foolish or silly, especially in a smug or self-satisfied way: "'Don't you like the poor lonely bachelor?' he yammered in a fatuous way” ( Sinclair Lewis). See Synonyms at foolish.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Obnoxiously stupid, vacantly silly, content in one's foolishness.
from the GNU version of the Collaborative International Dictionary of English
- adj. Feeble in mind; weak; silly; stupid; foolish; fatuitous.
- adj. Without reality; illusory, like the ignis fatuus.
from The Century Dictionary and Cyclopedia
- Foolish; foolishly conceited; feebly or stupidly self-sufficient; unconsciously silly: applied both to persons and to their acts.
- Idiotic; demented; imbecile.
- Unreal; illusory, like the ignis fatuus.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. devoid of intelligence
From Latin fatuus.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin fatuus ("foolish, silly, simple"). (Wiktionary)