Translation guide
The concept of being in the air, not touching the ground. Japanese expresses this with nouns, adverbs, and compound verbs depending on whether something is suspended, thrown, or happening during flight.
Describing something that is physically in the air, not on the ground.
The most common and neutral word for 'mid-air' or 'in the air'. Used for objects, people, or actions occurring in the air.
ボールが空中に浮かんでいる。
The ball is floating in mid-air.
彼は空中で一回転した。
He did a flip in mid-air.
A shorter, slightly more literary or dramatic version of 空中. Often used in set phrases or when emphasizing suspension.
帽子が宙に舞った。
The hat flew up into the air.
Literally 'half-sky', meaning mid-air. Rare and mostly found in technical or poetic contexts.
半空に浮かぶ雲。
Clouds floating in mid-air.
Describing an action that happens while something is in the air, such as catching or colliding.
The adverbial form of 空中, meaning 'in mid-air' or 'while airborne'. Used with verbs to describe actions occurring in the air.
空中でキャッチした。
I caught it in mid-air.
鳥が空中で虫を捕まえた。
The bird caught an insect in mid-air.
Shorter, more dramatic version of 空中で. Common in sports commentary or action descriptions.
選手が宙でボールを蹴った。
The player kicked the ball in mid-air.
Emphasizing that something is hanging or suspended without support.
Means 'suspended in mid-air' or 'hanging'. Often used for people or objects dangling.
ロープが宙づりになっている。
The rope is hanging in mid-air.
彼は崖から宙づりになった。
He was left dangling in mid-air from the cliff.
Literally 'float in mid-air'. Used for objects that seem to hover or are suspended magically/technologically.
魔法のじゅうたんが空中に浮かんでいる。
The magic carpet is floating in mid-air.
Two objects hitting each other while both are in the air.
Technical term for 'mid-air collision', used for aircraft or birds.
飛行機の空中衝突事故があった。
There was a mid-air collision between planes.
Everyday phrase meaning 'to collide in mid-air'.
二羽の鳥が空中でぶつかった。
Two birds collided in mid-air.
空中 is the standard word for 'mid-air' in most contexts. 宙 is shorter and often used in dramatic or literary expressions, or in compounds like 宙返り (somersault). 宙 can also imply 'empty space' or 'void' in philosophical contexts.
半空 is very rare and sounds archaic or technical. Stick to 空中 or 宙 for natural Japanese.