無風不起浪

无风不起浪
wúfēngbùqǐlàng
  1. lit. without wind there cannot be waves (idiom); there must be a reason
  2. no smoke without fire

CEDICT

  1. (figurative) No smoke without fire.
  2. No smoke without fire.

Wiktionary

比喻一切事情的發生都有原因。

重編國語辭典

事出有因

維基詞典

Entry Composition

1 無風 wúfēng to be without wind
2 不起 bùqǐ
  1. (literary) to be unable to get up (e.g. to sickness)
  2. (used after verbs) cannot afford to ...
  3. (used after verbs) do not wish to ... (in contempt)
  4. cannot afford to ...
  5. do not wish to ... (in contempt)
  6. to be unable to get up (e.g. to sickness)
3 浪 làng
  1. wave
  2. breaker
  3. unrestrained
  4. dissipated
  5. to stroll
  6. to ramble