1.
undeveloped; immature; underdeveloped
Not yet fully developed or matured. Used for physical growth, technology, infrastructure, or cognitive/emotional development.
子供の脳はまだ未発達だ。
A child's brain is still undeveloped.
交通インフラが未発達な地域がある。
There are areas where transportation infrastructure is underdeveloped.
技術がまだ未発達だった時代は、多くのことが手作業で行われていた。
In an era when technology was still undeveloped, many things were done by hand.
未発達 uses the prefix 未 (not yet) + 発達 (development), indicating something that has not yet reached its full potential.
COMMON COLLOCATIONS:
- 未発達な地域 — underdeveloped area
- 未発達な段階 — undeveloped stage
- まだ未発達 — still undeveloped
SIMILAR WORDS:
- 未熟 — immature, inexperienced (often about skills or people)
- 未発達 — undeveloped (neutral; about systems, organs, regions)
- 低開発 — underdeveloped (older term, mainly for economies)