Why in the expression "ぜんぜん違う" the verb is in positive?


I have been studying the adverbs and in the grammar book they said that there
are some negative adverbs that means that when you use it the next verb must
be in negative form, for example:

  * > あまり わかり **ません**

  * > ぜんぜん 出来 **ない**

But I found the expression **ぜんぜん違う** shouldn't it be **ぜんぜん違わない**? how do I
know when to put the verb in a positive form or in a negative form?




「全然」has two definitions:

  1. not at all (with negative verb)

  2. wholly, entirely, completely 

Therefore, it's meaning is based on whether the verb that follows it is in the
affirmative or the negative. I'm guessing about 99% of the time you will see
it used in conjunction with a negative verb, but every once in awhile you will
see it used in the affirmative.

「全然違う」is one example, as is 「全然大丈夫」(I'm/It's totally fine), which is more like
a set phrase. You will also occasionally see something like 「全然だめになった」(It was
completely spoiled/ruined), which is similar to 「全然違う」in that 「だめ」already has
a negative connotation and so to add a negative verb on top of it would make
it a double negative, thus reversing the meaning.




「全然」has two definitions:

  1. not at all (with negative verb)

  2. wholly, entirely, completely 

Therefore, it's meaning is based on whether the verb that follows it is in the
affirmative or the negative. I'm guessing about 99% of the time you will see
it used in conjunction with a negative verb, but every once in awhile you will
see it used in the affirmative.

「全然違う」is one example, as is 「全然大丈夫」(I'm/It's totally fine), which is more like
a set phrase. You will also occasionally see something like 「全然だめになった」(It was
completely spoiled/ruined), which is similar to 「全然違う」in that 「だめ」already has
a negative connotation and so to add a negative verb on top of it would make
it a double negative, thus reversing the meaning.

