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From an English perspective--including mine since I'm learning Japanese using
English, I felt that 違う sounded strong, this may be from the tendency to
respect others' opinions on English, that implying others to be wrong may be
seen as rude. But from the situation that I've seen it was used, and based on
a native I asked; 違う was used freely like a 'no' in English when you disagree
with the information being said. For example, if we were asked ”大学生ですか” the
native Japanese that I asked said it's fine to reply with ”違います” if we aren't,
and that it can be used in other formal situations. But another non-native yet
advanced Japanese speaker claimed the word to be strong and can be rude. I
know since I already got confirmation from a native speaker, it should be
done, but I'm seeking more info, when is it fine to use 違う and can it be rude?
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2020-06-18T00:18:11.440
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2020-06-18T06:53:44.060
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question
word-choice words usage
When is it fine to use 違う?
違う has another meaning: "Different".

君は他の人と違う。

This sentence is not impolite。
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2020-06-18T00:32:55.643
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2020-06-18T00:32:55.643
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I rather read your remark on English connotation interestingly, but anyway,
there do exist some cases where the superficial form and the meaning 違う, in
any language.

Effectively, you can just take 違う as Japanese way to say "it's not", because:

> あなたはプログラミングしますか？ [ordinary verb]  
>  → いいえ、しません。

> あなたはプログラマーですか？ [copula]  
>  → いいえ、プログラマーじゃありません。 (too long!)  
>  → いいえ、*じゃありません。 (ungrammatical!)  
>  → いいえ、違います。

So this is our pragmatic solution for this specific linguistic problem, and
not much related to anything cultural. Incidentally, in casual speech we
sometimes simply say じゃない（です） in this context, which is obviously not a good
grammar, but as short as 違います／違う in mora count.
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2020-06-18T06:53:44.060
78082
2020-06-18T06:53:44.060
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answer