infantilism Hear it!

infantilism definition

in·fan·til·ism (in fanti liz′əm; also infən-)

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.

Comments
Improve this definition.
Do you have more to add? Share your linguistic knowledge or observation.
/Register to save your comments.