Fatuous

ahd-5
  • adjective. Foolish or silly, especially in a smug or self-satisfied way: synonym: foolish.
  • 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.
  • the GNU version of the Collaborative International Dictionary of English
  • adjective. Feeble in mind; weak; silly; stupid; foolish; fatuitous.
  • adjective. Without reality; illusory, like the ignis fatuus.
  • Wiktionary, Creative Commons Attribution/Share-Alike License
  • adjective. Obnoxiously stupid, vacantly silly, content in one's foolishness.
  • WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
  • adjective. devoid of intelligence