郊外|こうがいkougai[1]atamadaka (head-high)

1. nounsuburb; residential area on the outskirt of a city; commuter belt
   私は東京とうきょうの郊外こうがいに住すんでいる。↗

   I live on the outskirts of Tokyo.

• Synonym近郊きんこうNeutralAreas close to a city, as in 「東京近郊」 or 「大阪近郊」; the emphasis is on proximity to the city.
• Synonym市外しがいNeutralOutside the city as an administrative unit, as in 「市外に引っ越す」; the focus is the city boundary, while 「郊外」 is the outer zone of the city.
• Related町外れまちはずれNeutralThe edge of a town where the houses start to thin out, as in 「町外れの小屋」; covers a smaller area than 「郊外」.
• Related都市近郊部WrittenA written term for the areas surrounding a city, seen mainly in statistical and planning documents.
• Antonym都心としんNeutralThe central part of a city, especially Tokyo's centre; the direct opposite of 「郊外」.
• Antonym市内しないNeutralWithin the city limits or in town; suburbs can lie inside the city too, so this is not a direct antonym of 「郊外」.

Default to 「郊外」 for a city's outskirts. Use 「町外れ」 for the edge of a town, 「近郊」 for areas near a city, 「市外」 when the administrative boundary matters; 「都市近郊部」 is a written term. 「都心」 is the opposite; 「市内」 is not, as suburbs can be within the city.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 都市としの外郭がいかく部ぶに位置いちする、都市とし的てき要素ようそと農山村のうさんそん的てき要素ようそが混在こんざいする地域ちいき。