undeveloped

adjective

un·​de·​vel·​oped ˌən-di-ˈve-ləpt 

-dē-

: not developed : lacking in development

undeveloped natural resources

undeveloped potential

undeveloped film

undeveloped seeds

: such as

a

: not used for building, farming, industry, etc.

undeveloped land

an area of undeveloped wilderness

b

: having a relatively low level of industrialization and standard of living

undeveloped countries/nations

Examples of undeveloped in a Sentence

Recent Examples on the Web

The brain injury caused cerebral atrophy and a glial scar, which led to the boy's brain being significantly undeveloped, according to court documents. —Arkansas Online, 25 Aug. 2025

Two Ohio police officers were allegedly ambushed by an armed man in an undeveloped industrial park on Wednesday. —Jade Walker, CNN Money, 24 July 2025

The shooting took place at an undeveloped industrial park that has walking trails and some streets, Failing said. —Phil Helsel, NBC news, 23 July 2025

However, his countermeasures and pass-rush efficiency are currently undeveloped, and Georgia’s heavy defensive line rotation is a significant reason behind that. —Dane Brugler, New York Times, 22 July 2025

Word History

First Known Use

1736, in the meaning defined above

Rhymes for undeveloped

• underdeveloped
• developed
• enveloped
• redeveloped

Medical Definition

undeveloped

adjective

un·​de·​vel·​oped ˌən-di-ˈvel-əpt 

: lacking in development : not developed

physiologically undeveloped