飛快

飞快
fēikuài
  1. very fast
  2. at lightning speed
  3. (coll.) razor-sharp

CEDICT

colloquial

Entry Composition

1 飛 fēi to fly
2 快 kuài
  1. rapid
  2. quick
  3. speed
  4. rate
  5. soon
  6. almost
  7. to make haste
  8. clever
  9. sharp (of knives or wits)
  10. forthright
  11. plainspoken
  12. gratified
  13. pleased
  14. pleasant