白費唇舌

白费唇舌
báifèichúnshé
  1. to whistle down the wind
  2. to waste one's breath (idiom)

CEDICT

to waste one's breath

Wiktionary

Entry Composition

1 白費 báifèi to waste (one's energy etc)
2 唇舌 chúnshé
  1. argument
  2. words
  3. lips and tongue

Related entries

費話 fèihuà
  1. to talk at length
  2. to waste one's breath
  3. variant of 廢話 fèihuà