adinumásọ̀rọ̀ noun /ā.dī.nũ̄.má.sɔ̀.ɾɔ̀/
Definitions
  1. one who stays quiet and doesn't talk literally
  2. the plant Clerodendrum japonicum idiomatic
Etymology
From a- (“agent prefix”) + dì (“to close, to block”) + ẹnu (“mouth”) + máà (“do not”) + sọ̀rọ̀ (“to talk”), literally “one who shuts their mouth and does not talk”.
Component words
a-agent prefix to close, to block ẹnumouthmáàdo notsọ̀rọ̀to talk
Source: Wiktionary, where this word is spelled “adinumasọrọ”. Reference: en-adinumasọrọ-yo-noun-yZOdw14K