無む定てい形けい

na-adjective, noun

amorphous; shapeless

Describes something lacking a fixed or definite shape; used in both literal and figurative contexts.

• この物ぶっ質しつは無む定てい形けいで、結けっ晶しょう構こう造ぞうを持もたない。

  This substance is amorphous and has no crystalline structure.

• 彼かれの考かんがえはまだ無む定てい形けいだ。

  His ideas are still shapeless.