infantilism

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

Definition of infantilism

  1. 1 :  retention of childish physical, mental, or emotional qualities in adult life; especially :  failure to attain sexual maturity

  2. 2 :  an act or expression that indicates lack of maturity

First Known Use of infantilism

1895


Medical Dictionary

infantilism

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

Medical Definition of infantilism

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

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