三缄其口 sān jiān qí kǒu

DEFINITIONS

  1. (idiom) reluctant to speak about it
  2. tight-lipped

CHARACTERS

三 sān
HSK 1
three
缄 jiān seal, close; bind; letter
其 qí
HSK 3
his, her, its, their; that
口 kǒu
HSK 3
mouth; open end; entrance, gate