不適當

不适当
bùshìdàng
  1. inadequate
  2. unfit

CEDICT

Entry Composition

1 不適 bùshì
  1. unwell
  2. indisposed
  3. out of sorts
2 當 dàng
  1. at or in the very same...
  2. suitable
  3. adequate
  4. fitting
  5. proper
  6. to replace
  7. to regard as
  8. to think
  9. to pawn
  10. (coll.) to fail (a student)

Related entries

貧 pín
  1. poor
  2. inadequate
  3. deficient
  4. garrulous
不夠 bùgòu
  1. not enough
  2. insufficient
  3. inadequate
不够吗？

Is that not enough?

Source: Tatoeba

欠妥 qiàntuǒ
  1. improper
  2. inappropriate
  3. unsatisfactory
  4. inadequate
不足 bùzú
  1. insufficient
  2. lacking
  3. deficiency
  4. not enough
  5. inadequate
  6. not worth
  7. cannot
  8. should not
光看表面是不足夠的。

All that glitters is not gold.

Source: Tatoeba