unconstrained creativity; bold and imaginative
A yojijukugo describing creative work or thinking that is free, bold, and unbound by convention, like a heavenly steed galloping through the sky. Often used in literary or artistic contexts.
His paintings truly embody the spirit of unconstrained creativity.
この小説は天馬行空の発想で書かれている。
This novel is written with bold and imaginative ideas.