口說無憑 kǒu shuō wú píng

DEFINITIONS

  1. (idiom) you can't rely on a verbal agreement
  2. just because sb says sth, doesn't mean it's true

CHARACTERS

口 kǒu
HSK 3
mouth; open end; entrance, gate
說 shuō speak, say, talk; scold, upbraid
無 wú negative, no, not; lack, have no
憑 píng lean on, depend on, rely on