maligning

/M AH0 L AY1 N IH0 NG/
verb
  1. 1

    To make defamatory statements about; to slander or traduce.

  2. 2

    To treat with malice; to show hatred toward; to abuse; to wrong.

Source: https://en.wiktionary.org/wiki/malign, https://en.wiktionary.org/wiki/maligning