Translation guide
Expressing a large number or quantity in Japanese. The most common and versatile way is たくさん (takusan). For formal or written contexts, 多数 (tasū) is used. 大量 (tairyō) emphasizes a large volume or mass. 数多く (kazuōku) is often used attributively. おおぜい (ōzei) is specifically for large numbers of people.
Expressing that there is a large number or amount of something in a general sense.
The most common and versatile word for 'a lot' or 'many'. Can be used as an adverb, adjective, or noun. Suitable for both spoken and written Japanese.
公園に人がたくさんいます。
There are a lot of people in the park.
たくさんの本を読みました。
I read many books.
Formal word for 'a large number'. Often used in news, reports, and official contexts. Can be used as a noun or adverbially with の.
Literally 'many in number'. Often used attributively (数多くの + noun) to mean 'numerous' or 'a large number of'. Slightly formal.
数多くの問題があります。
There are numerous problems.
Emphasizing a large quantity in terms of volume, mass, or bulk, often for objects, substances, or data.
Means 'large quantity' or 'massive amount'. Used for physical objects, substances, data, etc. Often implies a sense of scale or bulk.
大量のゴミが出ました。
A large amount of garbage was produced.
大量のデータを処理する。
Process a large volume of data.
Similar to 大量 but slightly more formal and less common. Often used in technical or scientific contexts.
Specifically referring to a large number of people.
Means 'many people' or 'a crowd'. Used only for people. Common in spoken Japanese.
駅におおぜいの人がいました。
There were many people at the station.
Kanji form of おおぜい, but can also be read as たいせい in formal contexts. Means 'large crowd' or 'many people'.
Expressing that the number is so large it cannot be counted.
Means 'countless' or 'innumerable'. Used for abstract or concrete things that are too many to count.
空には無数の星が見える。
Countless stars can be seen in the sky.
Both mean 'many' or 'a lot', but 多い is an adjective (多い人 = many people), while たくさん is an adverb/noun (人がたくさんいる = there are many people). 多い cannot directly modify verbs; use たくさん instead.
While 多い人 is grammatically correct, it's more natural to say たくさんの人 or 人が多い. Using 多い directly before a noun can sound awkward in some contexts.
多数の学生がイベントに参加しました。
A large number of students participated in the event.
テーブルの上にりんごがたくさんありました。
There were a lot of apples on the table.
大量の水が使われた。
A massive amount of water was used.
A large number of participants gathered.
Please consume a large amount of fluids.
大勢の観客が集まった。
A large crowd of spectators gathered.
Literally 'cannot finish counting'. A common phrase meaning 'countless' or 'too many to count'.
数え切れないほどの思い出がある。
I have countless memories.