無語

无语
wúyǔ
  1. to remain silent
  2. to have nothing to say
  3. (coll.) speechless
  4. dumbfounded

CEDICT

colloquial

Entry Composition

1 無 wú
  1. not to have
  2. no
  3. none
  4. not
  5. to lack
  6. un-
  7. -less
2 語 yǔ
  1. dialect
  2. language
  3. speech