ooi-vs-sukunai

おおい (ooi) and すくない (sukunai) are the Japanese words for “many/much” and “few/little” — but they behave differently from their English counterparts in important ways. Unlike English, where you choose between “many” (countable) and “much” (uncountable), Japanese uses おおい for both. However, there is one critical rule: おおい (多い) is almost never placed directly before a noun as a modifier. This guide explains everything with examples, comparison tables, and a quick quiz to test your understanding.

Yuka

Hey Rei! I keep mixing up おおい and すくない. Can you break it down for me?

Rei

Sure! They’re both useful words but used in different situations. Let me walk you through it with some examples!

At a Glance: おおい vs. すくない

おおい (多い) — Many, Much, and Abundant

おおい means “many” or “much” — covering both countable things (people, cars, books) and uncountable quantities (water, time, money). The kanji is 多い. What makes this adjective unique among Japanese い-adjectives is that it is almost never used directly before a noun as a modifier — instead, it almost always appears as a predicate (at the end of a clause).

Correct usage — predicate:

今日は人が多い。
Kyou wa hito ga ooi.
There are many people today.

Avoid — prenominal (modifier before noun):
× 多い人 (ooi hito) — This sounds unnatural in most contexts.
✓ Instead use: 多くの人 (ooku no hito — many people) or たくさんの人 (takusan no hito).

Example 1 — time:

宿題が多くて大変だ。
Shukudai ga ookute taihen da.
There is a lot of homework and it is tough.

Example 2 — frequency:

彼女は遅刻が多い。
Kanojo wa chikoku ga ooi.
She is late a lot (she is frequently late).

Example 3 — with 多く as noun/adverb:

多くの人が賛成した。
Ooku no hito ga sansei shita.
Many people agreed.

Yuka

Oh, so おおい is used that way! I never thought about it like that.

Rei

Exactly! Once you see it in context a few times, it starts to feel natural. The key is paying attention to おおい when you read or listen.

すくない (少ない) — Few, Little, and Scarce

すくない means “few” or “little” and applies to both countable and uncountable quantities, just like おおい. The kanji is 少ない. Unlike おおい, すくない can sometimes appear before a noun as a modifier, but it is still more natural in the predicate position.

Example 1 — people:

参加者が少なかった。
Sankasha ga sukunakatta.
There were few participants.

Example 2 — money/resources:

今月はお金が少ない。
Kongetsu wa okane ga sukunai.
I have little money this month.

Example 3 — experience:

経験が少ないので、もっと練習が必要だ。
Keiken ga sukunai node, motto renshuu ga hitsuyou da.
I have little experience, so I need more practice.

Yuka

And what about すくない? I always thought it was the same as おおい…

Rei

Easy mistake! すくない has its own distinct meaning. The difference becomes really clear once you compare them side by side — which is exactly what we’re doing here!

The Key Grammar Rule: おおい Before Nouns

This is the most important grammar point for this pair. In English, “many” can go before a noun (“many people”). In Japanese, おおい almost never goes directly before a noun. Use these alternatives instead:

Quick tip: When in doubt, use the predicate form (put おおい or すくない after the noun with が/は) rather than before the noun. Both words work naturally as predicates.

Side-by-Side Comparison

Conjugation Guide

Example using te-form:

宿題が多くて、全部終わらなかった。
Shukudai ga ookute, zenbu owaranakatta.
There was so much homework that I couldn’t finish it all.

Decision Flowchart: おおい or すくない?

Are you describing quantity?
        |
   ┌────┴────┐
  LARGE     SMALL
  amount    amount
   |              |
   v              v
おおい (多い)  すくない (少ない)

Where in the sentence?
  After noun (predicate) → Both work naturally
  Before noun (modifier) → Avoid おおい; use 多くの or たくさんの
                            すくない is more acceptable before noun

Quick Quiz — Test Yourself!

Yuka

Okay, I feel a lot more confident about おおい and すくない now! Should we test it with a quiz?

Rei

Let’s do it! A quick quiz is the best way to make sure the difference really sticks.

Fill in the blank with おおい (多い) or すくない (少ない).

Q1. There were very few customers today.
今日はお客さんがとても＿＿＿。
Kyou wa okyakusan ga totemo ___.

Answer: すくない (sukunai) — 少ない
Reason: Few customers = 少ない.

Q2. Tokyo has a lot of traffic.
東京は交通量が＿＿＿。
Toukyou wa koutsuuryou ga ___.

Answer: おおい (ooi) — 多い
Reason: A lot of traffic = 多い.

Q3. I have very little free time lately.
最近は暇な時間が＿＿＿。
Saikin wa hima na jikan ga ___.

Answer: すくない (sukunai) — 少ない
Reason: Little free time = 少ない.

Q4. There are many good restaurants in this neighborhood.
この辺はおいしいレストランが＿＿＿。
Kono hen wa oishii resutoran ga ___.

Answer: おおい (ooi) — 多い
Reason: Many good restaurants = 多い.

Q5. She makes few mistakes when speaking Japanese.
彼女は日本語を話すとき、ミスが＿＿＿。
Kanojo wa nihongo wo hanasu toki, misu ga ___.

Answer: すくない (sukunai) — 少ない
Reason: Few mistakes = 少ない.

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