有約在先

有约在先
yǒuyuēzàixiān
to have a prior engagement

CEDICT

事先已約好。

重編國語辭典

Entry Composition

1 有 yǒu
  1. to have; there is
  2. (bound form) having; with; -ful; -ed; -al (as in 有意 yǒuyì intentional)
2 約 yuē
  1. to make an appointment
  2. to invite
  3. approximately
  4. pact
  5. treaty
  6. to economize
  7. to restrict
  8. to reduce (a fraction)
  9. concise
3 在先 zàixiān
  1. to come first
  2. previous
  3. prior
  4. beforehand
  5. first
  6. formerly