Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Alternative form of know-it-all.

from the GNU version of the Collaborative International Dictionary of English

  • n. One who knows everything; hence, one who makes pretension to great knowledge; a wiseacre; a know-it-all; -- usually ironical.

from The Century Dictionary and Cyclopedia

  • n. One who knows or professes to know everything; a wiseacre: generally used ironically.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. someone who thinks he knows everything and refuses to accept advice or information from others

Etymologies

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