underdeveloped

adjective

un·​der·​de·​vel·​oped ˌən-dər-di-ˈve-ləpt How to pronounce underdeveloped (audio)
Synonyms of underdevelopednext
1
: not normally or adequately developed
underdeveloped muscles
underdeveloped film
2
: having a relatively low economic level of industrial production and standard of living (as from lack of capital)
underdeveloped nations
underdevelopment noun

Examples of underdeveloped in a Sentence

The baby was born with underdeveloped lungs.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Why does almost every punch line feel overworked and underdeveloped? Angelica Jade Bastién, Vulture, 23 May 2026 Although Bansal and Birkinshaw argue that leaders must broaden their view, adopt a multi-stakeholder perspective, and resist quick fixes, those capabilities do not arise from technique alone; they are grounded in character, and that character is often underdeveloped or imbalanced. Mary Crossan, Forbes.com, 22 May 2026 Along with epilepsy, Benjamin also has cerebral palsy, cortical visual impairment and severe vision impairment caused by underdeveloped optic nerves and malformations in the visual centers of his brain. Jordan Greene, PEOPLE, 19 May 2026 The likes of Paramount have launched book imprints for original productions and development projects to better manage the process, but broadly screen-to-books can be considered an underdeveloped space. Jesse Whittock, Deadline, 19 May 2026 See All Example Sentences for underdeveloped

Word History

First Known Use

1892, in the meaning defined at sense 1

Time Traveler
The first known use of underdeveloped was in 1892

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Cite this Entry

“Underdeveloped.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/underdeveloped. Accessed 27 May. 2026.

Kids Definition

underdeveloped

adjective
un·​der·​de·​vel·​oped ˌən-dər-di-ˈvel-əpt How to pronounce underdeveloped (audio)
1
: not developed normally or enough
underdeveloped muscles
2
: having a low level of industrial production and standard of living
the underdeveloped nations

Medical Definition

underdeveloped

adjective
un·​der·​de·​vel·​oped ˌən-dər-di-ˈvel-əpt How to pronounce underdeveloped (audio)
: not normally or adequately developed
underdeveloped muscles
underdeveloped lungs

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