ㄋㄧˋˇěrzhīㄧㄢˊyán

  1. 不中聽不順耳有益通常忠告三國志···》:忠臣逆耳之言不合不亦!」·容與〉:膏肓苦口狐疑逆耳之言。」

speech that grates on the ear (idiom)​; bitter truths, home truths (that one does not want to hear)​