expression, i-adjective
indescribable; beyond description
Fixed expression meaning something is so extreme or unusual that it cannot be put into words. Often used for intense emotions, beauty, or terrible experiences.
See also: 形容のない (けいようのない)
その景色は形容しようのない美しさだった。
The scenery was of an indescribable beauty.
彼女の悲しみは形容しようのないほど深かっ
Her sadness was so deep it defied description.