釦子掉了。

The button came off.

Source: Tatoeba

Sentence Composition

1 釦子 kòuzi button
=2 掉 diào
  1. to fall
  2. to drop
  3. to lag behind
  4. to lose
  5. to go missing
  6. to reduce
  7. fall (in prices)
  8. to lose (value, weight etc)
  9. to wag
  10. to swing
  11. to turn
  12. to change
  13. to exchange
  14. to swap
  15. to show off
  16. to shed (hair)
  17. (used after certain verbs to express completion, fulfillment, removal etc)
=2 掉 nuò
  1. (obsolete) to hold; to wield; to bear; to lift
  2. to hold; to wield; to bear; to lift
=3 了 le
  1. (completed action marker)
  2. (modal particle indicating change of state, situation now)
  3. (modal particle intensifying preceding clause)
=3 了 liǎo
  1. to finish
  2. (used with 得 dé or 不 bù after a verb to express (im)possibility, as in 忘不了 wàngbuliǎo "cannot forget")
  3. (literary) (usually followed by a negative such as 無 wú or 不 bù) completely (not); entirely (not); (not) in the least
  4. to understand clearly (variant of 瞭 liǎo)
=3 了 liǎo
  1. (of eyes) bright
  2. clear-sighted
  3. to understand clearly
=3 了 liào unofficial variant of 瞭 liào