infantilism

noun in·fan·til·ism \ ˈin-fən-ˌtī-ˌli-zəm , -tə-ˌli- ; in-ˈfan-tə-ˌli- \

Definition of infantilism

1 :retention of childish physical, mental, or emotional qualities in adult life; especially :failure to attain sexual maturity
2 :an act or expression that indicates lack of maturity

First Known Use of infantilism

1895


Medical Dictionary

infantilism

noun in·fan·til·ism \ ˈin-fən-ˌtīl-ˌiz-əm , -tə-ˌliz-; in-ˈfan-tᵊl-ˌiz- \

medical Definition of infantilism

:retention of childish physical, mental, or emotional qualities in adult life; especially :failure to attain sexual maturity

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