一定不移

yīdìngbùyí

synonym of 一定不易 (yīdìngbùyì, “unalterable”)

Wiktionary

Entry Composition

1 一定 yīdìng
  1. surely
  2. certainly
  3. necessarily
  4. fixed
  5. a certain (extent etc)
  6. given
  7. particular
  8. must
2 不移 bùyí
  1. steadfast
  2. inalienable