Grammar Info

N2 Lesson 1: 10/23


Surely, Certainly


(たし)かに + Phrase


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About 確かに

(たし)かに is the adverbial use of the な-Adjective (たし)か, meaning 'to be certain', or 'to be assured'. It may be used in the same way as 'certainly' or 'surely' in English, especially when the speaker wants to highlight (A) is definitely the case.
  • (たし)かに(かれ)はイケメンですが、マナーが(わる)いです。
    He is certainly handsome, but he has bad manners.
  • (たし)かにさっきのは()()ぎだった。ごめん。
    What I said earlier was certainly out of line. I'm sorry.
Caution - (たし)かに as 'certainly' is only used for verifying information, and does not carry the nuance of giving permission, as it does in English.
  • (たし)かに結構(けっこう)(むずか)しいね。ちょっと(あま)()てたわ。
    This is certainly difficult. I underestimated it. (Natural Japanese)
  • (たし)かに宿題(しゅくだい)()わってるならゲームをしてもいいよ。
    Certainly! You may play video games if you finish your homework. (Unnatural Japanese)
Caution - When the に is removed, (たし)か is often used in a similar way to 'if I remember correctly', 'if I'm not mistaken', or 'now that you mention it'.
  • あの(ひと)(たし)たくやくんのおじさんだったような()がする。
    If I recall correctly, I feel like that person is Takuya-kun's father.
  • そう()えば、(まえ)いくら()りたっけ?(たし)千円(ぜんえん)だったよね?
    By the way, how much money did I borrow the other day? If I remember correctly, it was three-thousand yen, correct?




    You can certainly rely on him.


    Those clothes certainly look good on you.


    From the standpoint of the school's rules, students should certainly obey their teacher.


    I heard he is from a musical household, but he is certainly skilled with an instrument.


    The fee for transferring (to another team) was a considerable amount, but (he) is certainly actively participating.

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      確かに – Grammar Discussion

      Most Recent Replies (4 in total)

      • mrnoone


        Hey and welcome on the community forums!

        Yes, 確かに can be used by itself, to agree with something. In that case it also means “Indeed”, “Certainly”, “So true” and so on.

        B『確かに。 私も君の言うとおりだと思う。』

        A ‘He looks so sad, probably because he lost his ten thousand yen bill.’
        B ‘So true. I think it is just like you say.’

      • simias


        Can’t 必ず be used with the same sense? I’m surprised to see that typing かならず as an answer is a straight fail instead of a soft “warn” type of answer.

      • Pablunpro



        I think that 確かに has to do confirmation of evidence (indeed, for sure, so true…) whilst 必ず has to do with the inevitability of something (necessarily, for sure, without fail). I guess that the confusion lies in the fact that both can be translated into English as “for sure”, though they are two different “for sures”.

        確かに, I agree that a soft warning would be good to clarify this.


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