[in-fuh n-tl-iz-uh m, -tahy-liz-, in-fan-tl-iz-uh m]
- the persistence in an adult of markedly childish anatomical, physiological, or psychological characteristics.
- an infantile act, trait, etc., especially in an adult.
- a speech disorder characterized by speech and voice patterns that are typical of very young children.
Origin of infantilism
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for infantilism
It is quite unnecessary to construct such dreams as a return to infantilism, as a regression, as the Freudians generally do.Psychoanalysis
The significance of "infantile sexual lesions" has also tended to give place to that of "infantilism of sexuality."Studies in the Psychology of Sex, Volume 1 (of 6)
One of these suffered from infantilism, one turned out to be a drunkard, and the third became a social degenerate and drunkard.Being Well-Born
Michael F. Guyer
- a condition in which an older child or adult is mentally or physically undeveloped
- isolated instances of infantile behaviour in mature persons
- childish speech; baby talk
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for infantilism
Online Etymology Dictionary, © 2010 Douglas Harper
- A state of arrested development in an adult, characterized by retention of infantile mentality, accompanied by stunted growth and sexual immaturity, and often by dwarfism.
- Extreme immaturity, as in behavior or character.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.