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undeveloped

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undeveloped /ˌʌndɪˈvɛləpt/ adjective
undeveloped
/ˌʌndɪˈvɛləpt/
adjective
Britannica Dictionary definition of UNDEVELOPED
[more undeveloped; most undeveloped]
of land : not used for building, farming, industry, etc.
of a country, society, etc. : having many poor people and a low level of industrial production : not developed