非ひ定てい型けい

noun-modifying (irregular)

free-form; unconventional

Used for creative works that do not follow a fixed pattern, especially poetry or verse.

• 彼かれは非ひ定てい型けいの詩しを書かくのが好すきだ。

  He likes writing free-verse poetry.

noun-modifying (irregular)

atypical; non-standard

General term for something that does not fit a typical pattern or standard; used in technical or descriptive contexts.