LESSON NOTES · レッスンノート

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

How to say "a lot" in Japanese: たくさん, いっぱい — and the one that cannot touch a noun

たくさん and いっぱい both mean "a lot" and both go before the verb. 多おおい also means "a lot," but it is an adjective that cannot sit in front of a noun: 多おおい人ひと is wrong, and 人ひとが多おおい is right. That restriction catches every learner at least once, because English has no equivalent of it.

Quantity is one of the first things you want to express and one of the first places Japanese refuses to behave like English. The words are easy; the rule about where 多おおい can stand is the part worth five minutes.

The basics

たくさん: the standard "a lot"

たくさん食たべました。 — I ate a lot. (polite) 本ほんがたくさんあります。 — There are a lot of books. (polite)

たくさん is an adverb, so it goes before the verb. To attach it to a noun directly, you need の: たくさんの本ほん ("a lot of books"). Both たくさんの本ほんがあります and 本ほんがたくさんあります are correct, and the second is more common in speech.

いっぱい: the same, but warmer

いっぱい means the same thing and sounds more casual and more physical — it comes from 一杯いっぱい, "one cupful."

今日きょうはいっぱい歩あるきました。 — I walked a lot today. (casual-polite) お腹はらいっぱいです。 — I'm full. (polite — the set phrase, literally "stomach full")

お腹はらいっぱいです is the phrase to have ready after a meal in Japan, and it is a compliment rather than a complaint.

多おおい: the adjective that cannot go in front

Here is the rule that matters.

人ひとが多おおいです。 — There are a lot of people. (polite — correct) 多おおい人ひとがいます。 — (wrong as "many people" — this reads as "a person who is many")

多おおい describes a quantity as a state, so it works as a predicate at the end of a sentence but not as a modifier before a noun. If you need to modify a noun, you have three options:

  • 人ひとが多おおい店みせ — a shop where the people are many (relative clause)
  • たくさんの人ひと — a lot of people (たくさん + の)
  • 多おおくの人ひと — many people (the special form 多おおく + の)

多おおくの is the one to memorize, because it is the fix for exactly this situation and it is very common in writing.

Beyond the basics

少すくない has the same restriction

The opposite of 多おおい behaves identically.

お客きゃくさんが少すくないです。 — There are few customers. (polite — correct) 少すくない人ひと — (does not mean "few people")

The pattern to remember: 多おおい and 少すくない are about how many there are, not about which ones. Adjectives that describe quantity in Japanese live at the end of the sentence. 高たかい, 新あたらしい and 大おおきい have no such restriction — 高たかい本ほん is perfectly fine — which is why this feels arbitrary until you see that it is specifically the quantity adjectives.

とても, すごく, かなり: degree, not quantity

These modify how much, not how many, and they attach to adjectives rather than counting things.

とても高たかいです。 — It's very expensive. (polite, neutral) すごく高たかいです。 — It's really expensive. (casual-polite, more emphatic) かなり高たかいです。 — It's fairly expensive. (polite — less than すごく, more than a little)

とても is the neutral default and the one to use in writing. すごく is spoken and more emotional. かなり sits between "fairly" and "quite" and is useful precisely because it is honest about being a middling amount.

The small end: 少すこし, ちょっと, 少すこしだけ

少すこし話はなせます。 — I can speak a little. (polite, neutral) ちょっと待まってください。 — Please wait a moment. (polite — the most-used word in Japanese)

少すこし and ちょっと mean the same thing; 少すこし is slightly more formal. ちょっと also does an enormous amount of social work as a softener — ちょっと高たかいですね ("it's a bit expensive") and ちょっと… as a refusal are both ちょっと doing something other than measuring quantity.

Counting instead of quantifying

Often the natural Japanese is a number and a counter rather than a quantity word.

本ほんを三冊さんさつ買かいました。 — I bought three books. (polite)

Japanese reaches for exact counts more readily than English does, and the counter goes after the noun with no particle. If counters are still shaky, the six you actually need is the short version.

ばかり and だらけ: too much of one thing

Two words that mean "a lot" with an attitude attached.

  • 〜ばかり — nothing but, only this
  • 〜だらけ — covered in, full of (almost always negative)

漫画まんがばかり読よんでいます。 — I do nothing but read manga. (casual-polite, mild self-criticism) 間違まちがいだらけです。 — It's full of mistakes. (polite — definitely negative)

だらけ is strongly negative and attaches directly to a noun: 泥どろだらけ (covered in mud), 傷きずだらけ (covered in scratches). ばかり has its own set of uses, covered in 〜ばかり.

Common mistakes

  • Putting 多おおい in front of a noun. 多おおい人ひと is not "many people." Use 多おおくの人ひと or restructure as 人ひとが多おおい.
  • Putting 少すくない in front of a noun. Same rule. Use 少すこしの or restructure.
  • Forgetting the の after たくさん. たくさん本ほん is not standard; it is たくさんの本ほん, or move it to たくさんあります.
  • Using とても with a verb. とても食たべました is odd. For verbs you want たくさん食たべました.
  • Treating いっぱい as always casual. お腹はらいっぱいです is perfectly polite. The word is casual in register, not impolite.
  • Using だらけ for something positive. 花はなだらけ sounds like an infestation. For a pleasant abundance, use いっぱい.

The quantity toolkit

What you mean Word Where it goes
A lot (with a verb) たくさん / いっぱい Before the verb
A lot of + noun たくさんの / 多おおくの Before the noun
There are many 多おおい End of the sentence
There are few 少すくない End of the sentence
Very (with an adjective) とても / すごく / かなり Before the adjective
A little 少すこし / ちょっと Before the verb or adjective
An exact amount number + counter After the noun
Nothing but 〜ばかり After the noun or te-form
Covered in (negative) 〜だらけ After the noun

Practice

Questions 1 and 2 are the pair: the same meaning, and only one word order works.

1. Say "there are a lot of people," politely.

Show answer

人ひとが多おおいです。 — 多おおい goes at the end. It describes the quantity as a state.

2. Now say "many people" as a noun phrase, inside a longer sentence.

Show answer

多おおくの人ひと — 多おおい cannot modify a noun directly, so the special form 多おおく plus の does the job. たくさんの人ひと also works.

3. Say "I ate a lot," politely.

Show answer

たくさん食たべました。 — たくさん is an adverb, so it goes before the verb with no particle.

4. Say "I'm full" after a meal.

Show answer

お腹はらいっぱいです。 — A set phrase, and a compliment rather than a complaint.

5. Say "it's very expensive," neutrally and politely.

Show answer

とても高たかいです。 — とても for degree with an adjective. すごく would be more emotional and more spoken.

6. Say "I can speak a little," politely.

Show answer

少すこし話はなせます。 — ちょっと話はなせます also works and sounds slightly more casual.

7. Say "I bought three books."

Show answer

本ほんを三冊さんさつ買かいました。 — The counter goes after the noun and its particle, with nothing in between.

8. Say "it's full of mistakes," politely.

Show answer

間違まちがいだらけです。 — だらけ attaches straight to the noun and is always negative.

9. Fix this: 多おおい人ひとがいます。(meaning "there are many people")

Show answer

人ひとが多おおいです。 — Or 多おおくの人ひとがいます. 多おおい cannot stand in front of a noun.

10. Fix this: とても食たべました。

Show answer

たくさん食たべました。 — とても modifies adjectives. For "a lot" with a verb you need たくさん or いっぱい.

FAQ

Why can 高たかい go in front of a noun but 多おおい cannot? Because 多おおい describes the size of a set rather than a property of an individual. 高たかい本ほん picks out a book that is expensive; 多おおい本ほん would have to pick out a book that is numerous, which is not a thing a single book can be.

Is 多おおくの only for writing? It leans written and formal, but it is perfectly usable in speech. In casual conversation たくさんの or a restructured 〜が多おおい is more common.

What is the difference between たくさん and いっぱい? Meaning, none. Register: いっぱい is warmer and more casual, with a physical "filled up" feeling. たくさん is the neutral default and safer in writing.

Can I say とてもたくさん? Yes, though it is emphatic and slightly heavy. すごくたくさん is the more natural spoken version of the same idea.

Is ちょっと ever not about quantity? Constantly. ちょっと待まって ("hang on"), ちょっといいですか ("got a second?") and a trailing ちょっと… as a soft refusal are all social moves rather than measurements.

How do I say "too much"? 〜すぎる attached to the verb or adjective stem: 食たべすぎました ("I ate too much"), 高たかすぎます ("it's too expensive"). See 〜すぎる for the い you have to drop.

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.

たくさん	たくさん — a lot
いっぱい	いっぱい — a lot, full
多い	おおい — many, numerous
多く	おおく — many (before の)
少ない	すくない — few
少し	すこし — a little
ちょっと	ちょっと — a little, a moment
とても	とても — very
すごく	すごく — really
かなり	かなり — fairly, quite
だらけ	だらけ — covered in (negative)
お腹	おなか — stomach
冊	さつ — counter for books
間違い	まちがい — mistake
泥	どろ — mud
漫画	まんが — manga
お客さん	おきゃくさん — customer, guest
歩く	あるく — to walk

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. 多おおい人ひと is a mistake almost everyone makes exactly once, usually while trying to describe a crowded train — and the fix, 人ひとが多おおい, is a sentence you then use every day.

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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

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