Grammar Info

N2 Lesson 1: 13/23

相違(そうい)ない

Without a doubt, Certainly, Surely, Not mistaken

Structure

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

(1) であるから

Details

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    Formal

About に相違ない

In a similar fashion to に(ちが)いない, 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)'.

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(ちが)いない almost always being used in its place.

Examples

--:--

    田中(たなか)先生(せんせい)一流(いちりゅう)外科(げか)()だから、手術(しゅじゅつ)成功(せいこう)する相違(そうい)ない

    Doctor Tanaka is a first-class surgeon, so the surgery will be successful without a doubt.

    報告(ほうこく)によると、この(あたら)しいウイルスは空気(くうき)(かい)して(ひろ)がる相違(そうい)ない

    According to the report, this new virus is, without a doubt, spreading through the air.

    記者(きしゃ):「首相(しゅしょう)来年(らいねん)減税(げんぜい)をすると()ったから、グレーゾーンを()らそうとする相違(そうい)ない。」

    Reporter: 'The prime minister said that he will reduce taxes next year, so he will without a doubt attempt to reduce the gray zone.'

    検察官(けんさつかん):「被害(ひがい)(しゃ)死因(しいん)(てつ)パイプのようなもので(なぐ)りつけられたから相違(そうい)ない。」

    Public prosecutor: 'It is certain that the cause of the victim's death was a blow from something like an iron pipe.' (without a doubt)

    課長(かちょう):「競合(きょうごう)他社(たしゃ)(なに)魂胆(こんたん)がある相違(そうい)ない。」

    Section manager: 'Competitors are surely plotting something.' (without a doubt)

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