Dictionary.com
definitions

acathexis

[ăk′ə-thĕk′sĭs]
n.
  1. A mental disorder in which certain objects or ideas fail to elicit an emotional response in the individual.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.