說不得

说不得
shuōbude
  1. to be unmentionable
  2. be unspeakable
  3. must
  4. cannot but

CEDICT

  1. 不可說、不要說。
  2. 不得了。表示極度、非常。
  3. 不得已、只好。

重編國語辭典

Entry Composition

1 說 shuō
  1. to speak; to talk; to say
  2. to explain; to comment
  3. to scold; to tell off
  4. (bound form) theory; doctrine
2 不得 bùdé
  1. must not
  2. may not
  3. not to be allowed
  4. cannot

Related entries

一定要 yīdìngyào must
一定要有蘋果。

Apples are necessary.

Source: Tatoeba

務必 wùbì
  1. must
  2. to need to
  3. to be sure to
務必在三點鐘來。

Be sure to come at 3.

Source: Tatoeba

合當 hédāng
  1. must
  2. should
他不适合当老师。

He is unfit to be a teacher.

Source: Tatoeba

必得 bìděi
  1. must
  2. have to
他们坚持认为日常锻练是必得表出的行为。

They insist that daily exercise is an action that must be done.

Source: Tatoeba

總得 zǒngděi
  1. must
  2. have to
  3. be bound to
總得有過河的辦法。

There must be some way of traversing the river.

Source: Tatoeba

非得 fēiděi (followed by a verb phrase, then – optionally – 不可, or 不行 etc) must
你不必什麼都非得自己來。

You shouldn't try to do everything by yourself.

Source: Tatoeba

須 xū
  1. must
  2. to have to
  3. to wait
交友须谨慎。

You must be careful in choosing your friends.

Source: Tatoeba

得 děi
  1. to have to
  2. must
  3. ought to
  4. to need to
跑得飛快

Run like the wind.

Run very fast.

Source: Tatoeba

得要 děiyào
  1. to need
  2. must
我忙得要死。

I'm terribly busy.

Source: Tatoeba

必 bì
  1. certainly
  2. must
  3. will
  4. necessarily
有起必有落。

What goes up must come down.

Source: Tatoeba

必須 bìxū
  1. to have to
  2. must
  3. compulsory
  4. necessarily
必须的！

Definitely!

Source: Tatoeba

應 yīng
  1. to agree (to do sth)
  2. should
  3. ought to
  4. must
  5. (legal) shall
我应放更多盐。

I should've added more salt.

Source: Tatoeba

不得已 bùdéyǐ
  1. to act against one's will
  2. to have no alternative but to
  3. to have to
  4. to have no choice
  5. must
这不是我们的错……大家都是逼不得已才这么做。

It wasn't our fault... We all had to do it.

Source: Tatoeba

一定 yīdìng
  1. surely
  2. certainly
  3. necessarily
  4. fixed
  5. a certain (extent etc)
  6. given
  7. particular
  8. must
這一定是我。

It has to be me.

Source: Tatoeba

不得不 bùdébù
  1. have no choice or option but to
  2. cannot but
  3. have to
  4. can't help it
  5. can't avoid
她不得不哭。

She could not refrain from tears.

Source: Tatoeba

不由得 bùyóude
  1. can't help
  2. cannot but
不由得想起了故乡。

I can never forget my hometown.

Source: Tatoeba

不能不 bùnéngbù
  1. have to
  2. cannot but
我們不能不考慮它。

We have to think about it.

Source: Tatoeba