diss

/dɪs/
verb
  1. To insult, criticize, or show disrespect toward someone, often in a casual or public way.
    • She felt dissed when her friend didn't invite her to the party.
    • He dissed his teammate's performance in front of the whole team.
    • The rapper dissed his rival in a new song.
noun
  1. An insult or critical remark, especially one made publicly or in a song.
    • The two musicians exchanged diss tracks online.
    • The comedian's diss at the politician got a lot of laughs.
    • That was a harsh diss, but it was also funny.