Structure
Verb + に違いない
[い]Adjective + に違いない
[な]Adjective + に違いない
Noun + に違いない
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Standard
About に違いない
When the case marking particle に is combined with the noun 違い 'difference', and the い-Adjective ない, an expression similar to 'there is no doubt that (A)', or 'I'm sure that (A)' is created.
に違いない may be used with any verbs, い-Adjectives, な-Adjectives or nouns in their plain form.
Fun Fact
As に is marking the preceding word in this expression as an existing location (or state), 違いない is stating that no 'variance' exists within that state. This means that the literal translation of に違いない is close to 'there is no discrepancy in (A)'.
- あの人はカメラマンに囲まれている、有名人に違いない。That person is surrounded by cameramen. There is no discrepancy in that person being famous. (No reason to disbelieve)
Caution
It should be noted that 違いない is a combination of a noun and an い-Adjective, and not the negative form of the う - Verb 違う, which would be 違わない. 違いない translates as 'there is no difference', while 違わない would translate as 'it is not different'.
Synonyms
Examples
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あの顔は日本人に違いない。
That face... there is no doubt that that person is Japanese.
彼女は病気に違いない。
There is no doubt that she is sick.
こんなに遅いなんて…、何かあったに違いない。
Being so late... there is no doubt that something happened.
あの言い方だと、何か隠しているに違いない。
From the way he speaks, there is no doubt that he is hiding something.
大雪が降って大変だったに違いない。
I am sure that it was tough after that heavy snowfall.
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に違いない – Grammar Discussion
Most Recent Replies (2 in total)
Johnathan-Weir
Should mention that the formal form of this is に違いありません
veselinve
What is the difference between に違いない vs 違いがない
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