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.

• この症しょう状じょうは非ひ定てい型けいの経けい過かをたどることがある。

  This condition can sometimes follow an atypical course.