Dumbfound

//ˈdʌm.faʊnd// verb

Definitions

Verb
  1. 1
    To confuse and bewilder; to leave speechless. transitive

    "A bunch of nice, middle-class women debated on how to "rescue" prostitutes from their "terrible" fate. By invitation, the conference was attended by a number of prostitutes, who dumbfounded those nice, bourgeois ladies by making it clear that they had no desire whatever to be "rescued""

  2. 2
    be a mystery or bewildering to wordnet

Etymology

Blend of dumb + confound.

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