動不動

动不动
dòngbudòng
  1. (typically followed by 就 jiù) apt to (lose one's temper, catch a cold etc)
  2. at the drop of a hat

CEDICT

Entry Composition

1 動 dòng
  1. (of sth) to move
  2. to set in movement
  3. to displace
  4. to touch
  5. to make use of
  6. to stir (emotions)
  7. to alter
  8. abbr. for 動詞 dòngcí, verb
2 不動 bùdòng motionless