反faan2效haau6果gwo2

English

1. bad effect; result that is contrary to one's wish

粵語 — Cantonese

1. 同期望相反嘅效果；得唔到本來期望嘅好處，反而有另一啲壞處嘅結果

Examples

• 醫生話燕窩雖然有益，但燕窩有毛粒，會對有敏感人士造成反效果。

  The doctor points out that although birdnest is beneficial to health, it contains furry particles which might adversely affect those who have allergies.