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I've never heard someone say "ii yo". Is "ii yo" acceptable? And "ii zo"? In
particular, in casual masculine speech.
CC BY-SA 3.0
2017-09-12T23:30:39.710
53227
2021-02-01T02:19:32.083
25785
question
word-choice casual
Is "ii yo" acceptable?
In English, it would be similar to casually saying "yeah, sure!".

Like:

  * Can I borrow your pen?
  * Yeah, sure!

* * *

  * ペン貸してくれる？
  * いいよ

いいぞ, is also correct but it's less standard. I never heard people actually use
that in my experience. But people talk in all kinds of weird ways. Imagine
someone saying the following in English: `Yeah bruh`

It's not standard but some people actually talk like that so culturally
speaking, it's not wrong.
CC BY-SA 3.0
2017-09-13T00:11:53.880
53228
2017-09-13T00:18:19.103
2017-09-13T00:18:19.103
22785
22785
53227
answer
いいよ (ii yo) is a **casual** way to say "okay", "no problem", "I'll do it",
etc.

  * It is **not** acceptable in formal/business settings. Don't use it.
  * It is commonly and actively used among friends, regardless of sex.
  * It is not common in some dialects where other expressions are used by default. Kansai-ben speakers would use ええよ or ええで.

いいぞ can be heard when cheering sport players (sounds like "way to go!"), but
otherwise uncommon in the real-world spoken Japanese. You can say this to
someone who is really inferior to or close to you (for instance your
children), but it tends to sound "bossy".
CC BY-SA 3.0
2017-09-13T04:30:26.743
53231
2017-09-13T04:30:26.743
5010
53227
answer