Translation guide
The concept of the world beyond one's immediate surroundings, home, or familiar environment. In Japanese, this is often expressed with set phrases rather than a single word, and the best choice depends on whether you mean the physical outdoors, society at large, or a contrast with an enclosed space.
Referring to the world outside one's house, room, or a protected space, often with a nuance of venturing out or contrasting with inside.
A direct and natural phrase meaning 'the world outside'. Used when contrasting with an inside space or when talking about going out into the world.
彼は外の世界に興味を持ち始めた。
He began to take an interest in the outside world.
I've been shut in at home for so long that the outside world scares me.
A slightly more formal or literary term for the external world, often used in philosophical or psychological contexts.
外界との接触を断つ。
To cut off contact with the outside world.
Refers to society, the public, or the world of people. Often used when talking about how one is perceived by others or the norms of society.
世間は広いようで狭い。
The world is a small place (lit. 'society seems wide but is narrow').
彼は世間を騒がせた。
He caused a stir in the outside world / public.
Emphasizing the physical outside as opposed to indoors, often with a sense of freedom or nature.
The most common word for 'outside'. In context, it can mean the outside world, especially when contrasted with being indoors.
外で遊ぼう。
Let's play outside.
外の空気を吸いたい。
I want to get some fresh air (lit. 'breathe the outside air').
Means 'outdoors' or 'open air', often used for activities like camping, concerts, or field work.
Referring to the global or international community, or a world beyond one's familiar social circle.
Also used for the wider world beyond one's local area or country. Very flexible.
彼は外の世界を見るために旅に出た。
He set out on a journey to see the outside world.
Specifically means 'overseas' or 'foreign countries'. Use when the outside world means abroad.
海外で働きたい。
I want to work abroad (in the outside world).
While '外の世界' (soto no sekai) is natural, directly translating 'outside world' as '外側の世界' (sotogawa no sekai) sounds unnatural. Stick to the common phrases listed.
外界 (gaikai) is more formal and often used in written or academic contexts, while 外の世界 (soto no sekai) is everyday speech. For most learners, 外の世界 is the safer choice.
I went to an outdoor concert.