哇塞

wāsāi
  1. (slang) wow!
  2. also pr. wāsēi

CEDICT

slang

Entry Composition

=1 哇 wā
  1. Wow!
  2. sound of a child's crying
  3. sound of vomiting
=1 哇 wa replaces 啊 a when following the vowel "u" or "ao"
2 塞 sāi
  1. to plug; to stop up; to stuff in
  2. (bound form) a stopper; a cork