LESSON NOTES · レッスンノート

N5Grammar, one piece at a time · Sep 17, 2026

Japanese superlatives: 一番いちばん, もっとも, and the のなかで that makes them work

Japanese has no -est ending. To make a superlative you put 一番いちばん (いちばん) in front of the adjective: 一番いちばんたかい is "the most expensive." The set the comparison happens inside is marked with 〜のなかで, and that phrase does more work than 一番いちばん itself.

Superlatives are structurally simpler in Japanese than in English — nothing conjugates, nothing is irregular — and the difficulty sits entirely in the frame around them.

The basics

一番いちばん + adjective

このみせ一番いちばんやすいです。 — This shop is the cheapest. (polite) 日本語にほんご一番いちばんむずかしいとおもいます。 — I think Japanese is the hardest. (polite)

一番いちばん is an adverb sitting in front of the adjective, and the adjective does not change at all. やすい stays やすい. Compare English, where "cheap" becomes "cheapest" and "good" becomes "best" — Japanese does none of that.

一番いちばん literally means "number one," and it is the same 一番いちばん you meet in 一番いちばんせん (platform one) and in 一番好いちばんすき ("like the most").

〜のなかで: the set you are comparing inside

クラスのなか田中たなかさんが一番いちばんたかいです。 — Tanaka is the tallest in the class. (polite) 果物くだものなかで、りんごが一番好いちばんすきです。 — Of all fruit, I like apples best. (polite)

The pattern is 〜のなかで + X が + 一番いちばん + adjective. The のなかで phrase names the set, X names the winner, and が marks it because you are identifying which member of a known set it is. That が is doing exactly the job described in は vs が — identification out of a set.

Asking a superlative question

Here Japanese differs from English in a way that catches people.

果物くだものなかなに一番好いちばんすきですか。 — What fruit do you like best? (polite — open question) りんごとみかんとバナナのなかでどれが一番好いちばんすきですか。 — Of apples, oranges and bananas, which do you like best? (polite — closed set)

With an open category, なに. With a listed set, どれ. Using なに after naming three options sounds like you are ignoring the list you just gave. This is the same こそあど logic covered in これ, それ, あれ, どれ.

For people the word is だれ, and for places どこ — the question word matches the category, not the grammar.

Beyond the basics

もっとも: the written superlative

もっとも (もっとも) means the same as 一番いちばん and belongs to writing and formal speech.

もっと重要じゅうよう問題もんだいです。 — It is the most important issue. (formal, written)

You will meet もっとも in news, reports and academic writing. Saying it out loud in conversation sounds like reading a headline. 一番いちばん is what people say.

There is also the prefix さい〜 (さい), which builds fixed compounds: 最高さいこう (best), 最低さいてい (worst), 最新さいしん (newest), 最初さいしょ (first), 最後さいご (last). These are individual vocabulary items rather than a productive pattern — you cannot invent 最安さいやすい.

一番いちばん with verbs

一番いちばん also modifies verbs directly, which English cannot do with "most."

一番いちばんよく使つか言葉ことばです。 — It's the word I use most. (polite) 一番いちばんきたいくにはどこですか。 — Which country do you most want to go to? (polite)

一番いちばんよく〜 is the common shape for "the most often," and 一番いちばん〜たい is "want to most." Both are useful and neither needs any extra structure.

The negative superlative

To say something is the least, you flip the adjective rather than the 一番いちばん.

これが一番いちばんやすいです。 — This is the cheapest. (polite) これが一番いちばんたかくないです。(this is not "least expensive" — it says "this is the most not-expensive," which is odd)

Japanese prefers to name the opposite adjective: for "least expensive," say 一番いちばんやすい. For "the least interesting," 一番いちばんつまらない. Building a superlative on a negative is grammatical but reads as clumsy, and native speakers avoid it.

二番目にばんめに: second-most

二番目にばんめおおきい都市としです。 — It's the second-largest city. (polite)

番目ばんめに plus an adjective handles the rest of the ranking. Note the に, which is required: 二番目にばんめおおきい, not 二番目にばんめおおきい.

Comparatives are a different structure

一番いちばん handles superlatives; comparatives use a completely separate frame.

りんごよりみかんのほうきです。 — I prefer oranges to apples. (polite)

That is 〜より〜のほう, and mixing the two frames is a common error: 一番いちばんより is not a thing. Decide whether you are ranking two items or picking one out of many, then choose the frame.

Common mistakes

  • Trying to conjugate the adjective. There is no やすいest. 一番いちばん does all the work and やすい stays as it is.
  • Dropping のなかで. Grammatical, but the sentence loses the set. 一番好いちばんすきです alone leaves "out of what?" unanswered.
  • Using は instead of が. 一番いちばん sentences identify a member of a set, which is が territory. りんご一番好いちばんすきです.
  • Using なに after listing options. With a named set, the word is どれ.
  • Saying もっとも in conversation. Correct but written. Say 一番いちばん.
  • Building superlatives on negatives. 一番いちばんたかくない is awkward. Use the opposite adjective instead.
  • Mixing 一番いちばん with より. They belong to different frames — one ranks a set, the other compares two things.

The superlative frame

What you want Structure Example
X is the most ~ Xが一番いちばん+adjective これが一番いちばんやすいです
The most ~ in a set 〜のなかでXが一番いちばん+adj 果物くだものなかでりんごが一番好いちばんすきです
Open question 〜のなかなに一番いちばん+adj なに一番好いちばんすきですか
Closed question AとBとCのなかでどれが どれが一番好いちばんすきですか
About a person だれ一番いちばん+adjective だれ一番いちばんはやいですか
The most often 一番いちばんよく+verb 一番いちばんよく使つかいます
Second-most 二番目にばんめに+adjective 二番目にばんめおおきい
Formal, written もっとも+adjective もっと重要じゅうよう問題もんだい

Practice

Questions 3 and 4 are the pair: the same question with an open category and with a named list.

1. Say "this shop is the cheapest," politely.

Show answer

このみせ一番いちばんやすいです。一番いちばん goes in front and やすい does not change at all.

2. Say "of all fruit, I like apples best."

Show answer

果物くだものなかで、りんごが一番好いちばんすきです。 — のなかで names the set, が identifies the winner.

3. Ask what fruit someone likes best, as an open question.

Show answer

果物くだものなかなに一番好いちばんすきですか。なに for an open category.

4. Ask the same question after listing apples, oranges and bananas.

Show answer

りんごとみかんとバナナのなかでどれが一番好いちばんすきですか。 — どれ, because you have just named the set. なに would ignore your own list.

5. Say "it's the word I use most," politely.

Show answer

一番いちばんよく使つか言葉ことばです。一番いちばんよく is the standard shape for "most often."

6. Say "it's the second-largest city."

Show answer

二番目にばんめおおきい都市としです。 — The に is required before the adjective.

7. Write the formal, written version of "the most important issue."

Show answer

もっと重要じゅうよう問題もんだいです。もっとも belongs in writing. In speech, 一番いちばん.

8. Say "which country do you most want to go to?"

Show answer

一番いちばんきたいくにはどこですか。一番いちばん modifies きたい directly. No extra structure needed.

9. Fix this: りんごは一番好いちばんすきです。

Show answer

りんごが一番好いちばんすきです。 — Superlatives identify a member of a set, which takes が.

10. How would you say "the least expensive"?

Show answer

一番いちばんやす — Use the opposite adjective. 一番いちばんたかくない is grammatical but clumsy, and nobody says it.

FAQ

Is 一番いちばん or もっとも more correct? Both are correct. 一番いちばん is spoken and neutral; もっとも is written and formal. Choosing between them is register, not grammar.

Why is it が and not は? Because a superlative picks one member out of a known set, and identification out of a set is exactly what が does. は would topicalize the item instead, which changes what the sentence is doing.

Can I drop 〜のなかで? Yes, when the set is obvious from context. In a shop, これが一番いちばんやすいです needs no のなかで because the set is the shop. When the set is not obvious, leaving it out makes the sentence vague.

How do I say "one of the most ~"? もっとも〜のひとつ ("one of the most ~") in writing, or in speech 一番いちばん〜のひとつ, though many speakers prefer to restructure: とても〜です plus a comparison.

What is the difference between 一番いちばん and 最高さいこう? 一番いちばん ranks; 最高さいこう evaluates. 最高さいこう means "the best, the greatest" as a judgement and is also used as an exclamation — 最高さいこう! means "amazing!" You cannot swap them.

Does 一番いちばん always mean "most"? No — it also literally means "number one" in ordering: 一番いちばんせん (platform 1), 一番目いちばんめ (the first one). Context separates them without difficulty.

Vocabulary from this article

Tap the block to select all of it, then copy. In Anki: File → Import, note type Basic, separator Tab — the first column becomes the front, the second the back.

一番	いちばん — the most, number one
最も	もっとも — the most (formal)
最高	さいこう — the best, the greatest
最低	さいてい — the worst
最新	さいしん — the newest
最初	さいしょ — the first
最後	さいご — the last
中	なか — inside, among
果物	くだもの — fruit
都市	とし — city
重要	じゅうよう — important
番目	ばんめ — the Nth
速い	はやい — fast
安い	やすい — cheap
難しい	むずかしい — difficult
言葉	ことば — word
国	くに — country
問題	もんだい — issue, problem

I'm Yuuki, a Japanese teacher based in Tokyo. I've taught on italki as a Top 1% teacher and watched over 1,500 anime. The なに/どれ split is the one people are surprised by — they build a perfect superlative sentence and then use the wrong question word for a list they just read out themselves.

Book a trial lesson · $13

Sources: the author's own lessons and standard reference grammars.

More drills like the ones above, plus a timed JLPT-style mock test: Practice · N5

Want to try this in a real conversation?

30-minute trial lesson, $13. Times shown in your own timezone.

Book a trial lesson · $13