Grown-up and Underdeveloped

Opposite meaning words

Grown-up adjective - Relating to or typical of adults; displaying proper maturity.

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Underdeveloped is an antonym for grown-up.

Underdeveloped adjective - Not yet fully developed.

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Grown-up is an antonym for underdeveloped.

Cite this Source

Underdeveloped and Grown-up. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/grown-up/underdeveloped

Grown-up & Underdeveloped. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/grown-up/underdeveloped>.

Underdeveloped or Grown-up. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/grown-up/underdeveloped.