話到嘴邊留三分

话到嘴边留三分
huàdàozuǐbiānliúsānfēn
A still tongue makes a wise head. (idiom)

CEDICT

Entry Composition

1 話到嘴邊 huàdàozuǐbiān to be on the verge of saying what is on one's mind
=2 留 liú old variant of 留 liú
=2 留 liú
  1. to leave (a message etc)
  2. to retain
  3. to stay
  4. to remain
  5. to keep
  6. to preserve
=2 留 liú old variant of 留 liú
3 三分 sānfēn
  1. somewhat
  2. to some degree