know-all definition

  • noun:
    • Alternative type of know-it-all.
    • person who understands every little thing; ergo, one who makes pretension to great knowledge; a wiseacre; a know-it-all; -- usually ironical.
    • One who understands or professes to understand every thing; a wiseacre: generally made use of ironically.
    • an individual who believes he knows everything and won't accept advice or information from other people

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