certain

1. Sure in one's mind, positive; absolutely confident in the truth of something.

   I was certain of my decision.

2. Not to be doubted or denied; established as a fact.

   Now that more experiments have been run, the theory is certain and the argument is settled.

   established irrevocably

3. Sure to happen, inevitable; assured.

   It is certain that Spain will reach the finals. / Spain is now certain to reach the finals. / Spain is now certain of a place in the finals.

   Bankruptcy is the certain outcome of your constant gambling and lending.

   gewiss, sicher

   уве́ренныйuvérennyj, определённыйopredeljónnyj

   упе́вненийupévnenyj, пе́внийpévnyj

4. Unfailing; infallible.

5. Fixed; regular; determinate.

   at certain intervals

6. Particular and definite, but unspecified or unnamed; used to introduce someone or something without going into further detail.

   Every wine has a certain distinctive character which sets it apart from all others.

   Each morning, she would see a certain man rush past her window on his way to work.

7. (эвфемизм)Used to denote that the speaker is referring to a specific person or thing that they do not want to name directly, implying that the listener should infer the identity of the referent.

   I would have been here on time, but a certain someone lost the car keys!

8. Named but not previously mentioned.

   Looking inside the cover, they learned that the book had once belonged to a certain R. Jones.

9. Used before the name of someone famous that people are expected to know.

   Since the last British government to make such a proposal was that of a certain Margaret Thatcher, it might not seem unreasonable.

10. (устаревшее)Determined; resolved.

1. I am not certain about that.

   Я в этом не уверен.

   ukЯ щодо цього не певен.

   deIch bin mir dessen nicht sicher.

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2. I don't know for certain yet.

   Я пока точно не знаю.

   ukЯ ще точно не знаю.

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3. She is certain to be surprised.

   Она определённо удивится.

   deSie wird gewiss überrascht sein.

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4. I'm certain that he has finished.

   Я уверен, что он закончил.

   deEr ist bestimmt schon fertig.

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5. I agree to a certain extent.

   В какой-то степени я согласен.

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правильный