おおよそ

おおよそ is an adverb meaning "approximately," "roughly," "about," or "in general." It is used to express an estimate, approximation, or general outline of something. It is more formal than だいたい and is commonly found in written language, news reports, presentations, and formal speech.

Approximate numbers and quantities

The most common use of おおよそ is to indicate an approximate number, amount, time, or distance.

In this usage, おおよそ can often be replaced with やく約（やく）or だいたい, though おおよそ carries a slightly more formal tone.

General outline or gist

おおよそ can also mean "the gist" or "the general idea" of something, often used with verbs like わかる分かる, けんとうがつく見当がつく, or そうぞうがつく想像がつく.

When used as a noun modifier, it takes the form おおよその + Noun.

Negative contexts – "not at all" / "hardly"

When combined with a negative expression, おおよそ can mean "not at all" or "hardly," emphasizing that something is far from the expected standard. This is a more literary or emphatic usage.

In this usage, おおよそ functions similarly to とうてい到底（とうてい）or とても, emphasizing the impossibility or extreme nature of something.

Comparison with similar expressions

• だいたい: More casual and conversational; the most common everyday equivalent.
• やく約（やく）: Used directly before numbers; more concise and common in writing.
• およそ: Very similar to おおよそ and often interchangeable, but slightly more common in general usage. おおよそ feels a touch more formal.