misappreciation

/M IH1 S AH0 P R IY1 SH IY0 EY1 SH AH0 N/
noun
  1. 1

    A failure to correctly and completely understand; an incorrect notion or belief that is a result of such a failure.

  2. 2

    (dated) An observed failure to appreciate the proper worth of a person, an act or a thing.