Grammar Info

N2 Lesson 1: 14/24

に相違(そうい)ないWithout a doubt, Certainly, Surely, Not mistaken

Structure

Verb + （から）+ に相違(そうい)ない
［い］Adjective + （から）+ に相違(そうい)ない
［な］Adjective + （である(1)）+ に相違(そうい)ない
Noun + （である(1)）+ に相違(そうい)ない

(1) であるから

Details

  • Formal

About に相違ない

In a similar fashion to に違(ちが)いない, に相違(そうい)ない is a structure that firmly states that something is 'without a doubt (A)', or that there is 'no mistaking (A)'. It may be used to strengthen one's own opinions, or to strongly agree with the opinion of another. Although 相違(そうい) may be used by itself meaning 'to differ', or 'to have a discrepancy', 相違(そうい)ない is considered as a set い-Adjective. When combined with ない, the literal meaning is just 'there is no discrepancy in (A)'.

に相違(そうい)ない may be used with verbs, い-Adjectives, な-Adjectives and nouns.

に相違ない will often follow から, highlighting that there is no mistaking the 'cause' of (A).

Caution

This grammar structure is very formal, with に違(ちが)いない almost always being used in its place.

Synonyms

Examples

--:--

  • この下駄(げた)は彼(かれ)の物(もの)に相違(そうい)ない。

    There is no doubt that these geta are his.

  • これは県庁(けんちょう)からの指示(しじ)ということに相違(そうい)ないか？

    There is no doubt that these are instructions from the prefectural office?

  • これは我(わ)が社(しゃ)の公式(こうしき)の見解(けんかい)ということに相違(そうい)ない。

    There is no doubt that this is our company's official view.

  • わたしの意見(いけん)は妻(つま)の意見(いけん)ということに相違(そうい)ない。

    There is no doubt that my opinion is my wife's opinion.

  • これはゴッホの絵(え)のコレクションに相違(そうい)ない。

    This is without a doubt Gogh's collection of paintings.

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      に相違ない – Grammar Discussion

      Most Recent Replies (1 in total)

      • tloeser17

        tloeser17

        Just curious - with なadjs and nouns, when does one use である and how does it change the meaning? The page about this grammar point doesn’t seem to address that.

        I came across this sentence in a review, and answered 「であるに相違ない」, and it was marked incorrect. The correct answer apparently is 「に相違ない」.

        彼こそこの作品の本当の作者＿＿。

        That’s fine but… why?

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