underdeveloped
US /ˌʌn.də.dɚˈvel.əpt/
UK /ˌʌn.də.dɚˈvel.əpt/

1.
kurang berkembang, belum matang
not fully developed or grown; immature
:
•
The plant's roots were underdeveloped due to poor soil conditions.
Akar tanaman kurang berkembang karena kondisi tanah yang buruk.
•
His social skills are still quite underdeveloped.
Keterampilan sosialnya masih cukup kurang berkembang.
2.
terbelakang, kurang maju
(of a country or region) not having a high level of economic development
:
•
Many underdeveloped countries struggle with poverty and lack of infrastructure.
Banyak negara terbelakang berjuang dengan kemiskinan dan kurangnya infrastruktur.
•
The government is implementing policies to help underdeveloped regions.
Pemerintah sedang menerapkan kebijakan untuk membantu daerah-daerah terbelakang.