undeveloped /ˌʌndɪˈvɛləpt/ adjective Learner's definition of UNDEVELOPED
[more undeveloped; most undeveloped]
1
of land : not used for building, farming, industry, etc.(土地)未开垦的,未开发的 2
of a country, society, etc. : having many poor people and a low level of industrial production : not developed(国家、社会等)不发达的,落后的 3
: not fully grown or developed未充分发育的;不成熟的