滅聲 [灭声]

Jyutping mit6 seng1
Pinyin miè shēng

Definitions (粵典–words.hk)
  1. 動詞
    扼殺​發​表意​見​嘅​自由
    to silence (somebody's voice, opinion)
Definitions (Wiktionary)
  1. verb
    to silence (someone); to suppress