不惑

bùhuò
  1. without doubt
  2. with full self-confidence
  3. forty years of age

CEDICT

  1. (literary) to be not confused
  2. (literary, figurative) 40 years of age
  3. 40 years of age
  4. to be not confused

Wiktionary

  1. 不迷惑。
  2. 孔子自称四十不惑，后人因称四十岁为「不惑」。

重編國語辭典

Entry Composition

1 不 bù
  1. no; not so
  2. (bound form) not; un-
2 惑 huò
  1. to confuse
  2. to be puzzled

Containing this entry

不惑之年 bùhuòzhīnián

Related entries

当然 dāngrán
  1. only natural
  2. as it should be
  3. certainly
  4. of course
  5. without doubt
当然哪！

Definitely!

Source: Tatoeba