反戈一击

反戈一擊
fǎngēyījī

to turn one's weapon around and strike; (figuratively) to turn against those one has wrongly sided with

Wiktionary

Entry Composition

=1 反 fǎn
  1. contrary
  2. in reverse
  3. inside out or upside down
  4. to reverse
  5. to return
  6. to oppose
  7. opposite
  8. against
  9. anti-
  10. to rebel
  11. to use analogy
  12. instead
  13. abbr. for 反切 fǎnqiè phonetic system
=1 反 fàn
  1. (music) Cantonese opera gongche notation for the note fa (4).
  2. Cantonese opera gongche notation for the note fa (4).
  3. alternative form of 販 /贩 (fàn)
  4. used in 反反
=2 戈 Gē surname Ge
=2 戈 gē
  1. dagger-axe
  2. abbr. for 戈瑞 gēruì
  3. (Tw) abbr. for 戈雷 gēléi
3 一 yī
  1. one
  2. single
  3. a (article)
  4. as soon as
  5. entire; whole; all; throughout
  6. "one" radical in Chinese characters (Kangxi radical 1)
  7. also pr. yāo for greater clarity when spelling out numbers digit by digit
4 击 jī
  1. to hit
  2. to strike
  3. to break
  4. Taiwan pr. jí