頓時

顿时
dùnshí
immediately; suddenly

CEDICT

Entry Composition

1 頓 dùn
  1. to stop
  2. to pause
  3. to arrange
  4. to lay out
  5. to kowtow
  6. to stamp (one's foot)
  7. at once
  8. classifier for meals, beatings, scoldings etc: time, bout, spell, meal
2 時 shí
  1. o'clock
  2. time
  3. when
  4. hour
  5. season
  6. period