Maruko is telling dad to hold back a bit while eating (because the food is a way to thank her grandad).

I don't understand whether じゃ is a positive or negative predicate. I assume it's short for じゃない and hence negative. Both options seem to lead to a logical contradiction though.


Dad should hold back a little while eating
That's okay
That's right. Everyone should eat alot


Dad should hold back a little while eating
That's not good
That's wrong. Everyone should eat alot

I guess if it's negative and both grandad and dad are replying to Maruko's statement then it makes sense i.e. they both agree that what Maruko said is wrong. I find these negated endings like いいんじゃない really confusing as to whether there positive, negative, rhetorical etc.


2 Answers 2


This is called 「[役割語]{やくわりご}」 = "role language".

役割語 is often used in fiction to "help" the readers/viewers envision certain age/gender/profession/social status, etc. groups. It is mostly imaginary and it relies heavily on the stereotypes people (secretly) have about others.

(This is why I keep telling Japanese-learners to be careful with children's stories as the largest amount of 役割語 is indeed found in children's stories.)

「じゃよ」 here is clearly the 役割語 for 「だよ」 in Standard Japanese. As you know, Maruko's family lives in Shimizu, Shizuoka and they speak pretty "standard" except for the occasional use of 役割語. 「じゃよ」 is the affirmative sentence-ender that people "expect" older characters to use in fiction (if they grow up in the Japanese language). It does not really matter whether or not that is actually a common sentence-ender for older people in Shimizu in real life. This is fiction, not a documentary.

One also needs to know that many 役割語 often happen to be actual dialectal words borrowed from all over Japan. That is because 役割語 still has to make sense. You rarely create completely new words that no one would be familiar with. Everything a character says must sound at least somewhat familiar.

Not sure how you end up thinking 「じゃよ」 would be negative. It is affirmative all the way (just as 「だよ」 is). You may have a tendency to let your own "translated words" get in your way of understanding.

Maruko: "You should slow down, Dad." ← in regards to how Dad is eating.

Dad: "It's O.k. (for me to eat like this)." ← affirms his own action and intention to keep doing the same.

Grandad: "That's right; We should all eat a lot." ← affirms Dad's statement.

You probably thought Dad was denying Maruko's statement. He actually is in a sense, but the words he uses are positive - "Yes, it's OK for me to eat like this!"

And then, Grandad affirms Dad's statement by saying "That's right!" = 「そうじゃよ」.

  • May I ask about other popular "group" markers, like じゃ? Dec 6, 2017 at 14:16

"じゃ" is sometimes used to mean "だ” in some older men's speech. I have heard the expression "じゃのう〜" in several places before, but never ”じゃよ".

I did a little searching and it seems this style of speech is actually still used today in Okayama prefecture, by men and women, regardless of age (Source)

Another thing that page talks about is how authors will use variations in speech style in order to help differentiate who is talking. In your example, it says who is saying each phrase, but often in Manga and Novels it doesn't lay it out cleanly like that.

So I think for your purposes, you can just treat "じゃよ" as ”だよ"

EDIT: Here is another discussion (in Japanese) about using "じゃ"

  • Interesting, but if it's a positive predicate how do I get round the apparent contradiction? Maruko tells dad to hold back, dad agrees and grandad also agrees but says eat lots. btw I added the person labels myself to aid the question. It's possible I got them wrong but I don't think so. May 17, 2016 at 20:07
  • I agree that there is an apparent contradiction. If you could scan the relevant page (and possibly the one before for context) and upload it, then maybe we could figure it out.
    – Locksleyu
    May 17, 2016 at 20:14
  • 1
    This family lives in Shizuoka, which is far from Okayama. They speak pretty "standard".
    – user4032
    May 17, 2016 at 23:30
  • 3
    @Locksleyu It's sometimes called 役割語: using specific grammar / wording / vocabulary to indicate the age, gender, personality, status, etc of the speaker. user3856370: There is no contradiction: "Dad, slow down would you?" "Don't worry about it; I'm fine" "Yeah, everyone dig in!".
    – Brandon
    May 18, 2016 at 0:16
  • 3
    See: japanese.stackexchange.com/a/23691/5010 As long as it's used as a stereotyped role word to simulate old men's speech, the fact they don't live in the western part of Japan doesn't matter.
    – naruto
    May 18, 2016 at 0:25

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .