前功尽废

前功盡廢
qiángōngjìnfèi

synonym of 前功盡棄 /前功尽弃 (qiángōngjìnqì, “all previous achievements go down the drain; all the previous effort is wasted”)

Wiktionary

Entry Composition

1 前功 qiángōng
  1. (literary) previous achievements; previous deeds
  2. previous achievements; previous deeds
=2 尽 jǐn
  1. to the greatest extent
  2. (when used before a noun of location) furthest or extreme
  3. to be within the limits of
  4. to give priority to
=2 尽 jìn
  1. to use up
  2. to exhaust
  3. to end
  4. to finish
  5. to the utmost
  6. exhausted
  7. finished
  8. to the limit (of sth)
  9. all
  10. entirely
=3 废 fèi
  1. to abolish
  2. to abandon
  3. to abrogate
  4. to discard
  5. to depose
  6. to oust
  7. crippled
  8. abandoned
  9. waste
=3 废 fèi
  1. variant of 废 fèi
  2. disabled
=3 废 bì
  1. (historical) alternative form of 鄪 /𰻳 (bì, name of an ancient county in the State of Lu)
  2. a surname
  3. alternative form of 鄪 /𰻳 (bì, name of an ancient county in the State of Lu)
=3 废 fú
  1. (obsolete on its own in Standard Chinese) alternative form of 拂 (fú, “to transgress; to violate; to infringe”)
  2. alternative form of 拂 (fú, “to transgress; to violate; to infringe”)