adjective \pri-ˈzəm(p)-chə-wəs, -chəs, -shəs\

: too confident especially in a way that is rude : done or made without permission, right, or good reason

Full Definition of PRESUMPTUOUS

:  overstepping due bounds (as of propriety or courtesy) :  taking liberties
pre·sump·tu·ous·ly adverb
pre·sump·tu·ous·ness noun


  1. <it's a little presumptuous of you to assume that I'm your new best friend just because I invited you along>
  2. <the presumptuous doctor didn't even bother to explain to me the treatment that I would be receiving>
  3. To Yale University, he was David Sneed. And some people called him that. Close friends called him Marc. Not wanting to appear presumptuous, I tried not to commit to either, waiting instead for a signal. —Peter Beinart, New Republic, 22 Jan. 1996


Middle English, from Anglo-French presumptious, from Late Latin praesumptuosus, irregular from praesumptio (see presume)
First Known Use: 14th century


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