infantilism Hear it!

infantilism definition

in·fan·til·ism (in fan′ti liz′əm; also in′fən-)

noun

  1. immature or childish behavior
  2. Psychol. an abnormal state in which such behavior persists into adult life: it is marked by retarded mental and physical growth and by failure to mature sexually

Webster's New World College Dictionary Copyright © 2005 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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