未み発はっ達たつ

noun which may take the genitive case particle 'no'

undeveloped; underdeveloped; not yet developed

Describes something that has not yet reached full development, often used for skills, systems, regions, or organisms.

• この地ち域いきは交こう通つう網もうが未み発はっ達たつだ。

  This area has an underdeveloped transportation network.

• 彼かれの語ご学がく力りょくはまだ未み発はっ達たつだ。

  His language skills are still undeveloped.