noun which may take the genitive case particle 'no', noun
fictitious; imaginary; fabricated
Only with reading かくう
Describes something that does not exist in reality, such as a story, character, plan, or claim. Often used in formal and technical contexts.
その小説の舞台は架空の町だ。
The setting of that novel is a fictitious town.
彼の話は
His story was completely fabricated.
noun-modifying (irregular)
Rare prenominal use meaning 'aerial' or 'overhead', as in 架空線 (overhead wire). Not used as a standalone adjective in modern Japanese.
「架空線」という言葉で、空中に張られた電線を指す。
The term 架空線 refers to wires strung overhead.