noun, na-adjective, noun which may take the genitive case particle 'no'
free and unrestricted; unfettered; as free as the air
A yojijukugo describing a state of complete freedom, where one acts without any hindrance or restraint. Often used in literary or formal contexts.
彼の縦横無礙な発想にはいつも驚かされる。
I am always amazed by his unfettered way of thinking.
縦横無礙の境地で創作に打ち込む。
He devotes himself to creation in a state of complete freedom.
自由自在 also means 'freely' or 'at will,' but is more common and less literary than 縦横無礙. 縦横無礙 emphasizes the absence of obstacles, while 自由自在 focuses on doing as one pleases.
A yojijukugo composed of 縦横 (length and breadth, i.e., in all directions) and 無礙 (without hindrance). The exact historical origin is uncertain, but it is used to express boundless freedom.