屡试不爽

屢試不爽
lǚshìbùshuǎng
idiom #26,215

Meanings

  1. 1 tried and tested
  2. 2 never fails
  3. 3 works every time without exception

Examples

Zhège fāngfǎ lǚshìbùshuǎng, měi cì dōu yǒuxiào.
This method is tried and tested — it works every time.
Tā nà tào shuōcí lǚshìbùshuǎng, zǒng néng ràng rén xìnfú.
His line of argument never fails to convince people.

Tips

usage
here means 'error' or 'deviation' (an archaic sense), NOT comfortable. So = no deviation, i.e. it works without fail. Contrast with the modern colloquial meaning 'unhappy'.

Stroke Order

shì
shuǎng