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Definitions

underdeveloped

[uhn-der-di-vel-uhpt] / ˌʌn dər dɪˈvɛl əpt /
ADJECTIVE
(of a country) developing
Synonyms
Antonyms


ADJECTIVE
not fully developed
Synonyms
Antonyms
ADJECTIVE
not developed
Synonyms
Antonyms


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

It only takes one attention-grabbing and theologically underdeveloped topic for these competing incentives to create drama.

From Slate • Jun. 8, 2026

The country has the largest oil reserves in Africa but the years of fighting and instability have left them chronically underdeveloped.

From The Wall Street Journal • Apr. 15, 2026

It can however be fatal to infants with underdeveloped immune systems.

From BBC • Apr. 1, 2026

According to her Instagram post, Phillips was born with an underdeveloped kidney.

From Los Angeles Times • Feb. 11, 2026

“We think it’s possible that it’s underdeveloped, like an infant’s.”

From "Everything, Everything" by Nicola Yoon




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