under-represent

/AH1 N D ER0 R EH0 P R AH0 Z EH0 N T/
verb
  1. 1

    To represent something as being lower or smaller than is the case.

  2. 2

    To give something insufficient or inadequate representation.

Source: https://en.wiktionary.org/wiki/under-represent, https://en.wiktionary.org/wiki/underrepresent