嘎然

gārán
  1. (onom.) screech of a sudden stop
  2. suddenly stop (of sounds)
  3. crisply and clearly (of sounds)

CEDICT

onomatopoeic

Entry Composition

1 嘎 gā (onom.) short but loud sound
2 然 rán
  1. correct
  2. right
  3. so
  4. thus
  5. like this
  6. -ly