乾笑 [干－]

Jyutping gon1 siu3
Pinyin gān xiào

Definitions (CC-CEDICT)
  1. to give a hollow laugh
  2. to force a smile
  3. forced laugh
  4. CL:聲|声[sheng1]
Definitions (Wiktionary)
  1. verb, Wu
    to fake a laugh