/ Thesaurus / I Synonyms of infantile fixation Find synonyms for: Noun1. arrested development, fixation, infantile fixation, regression, abnormality, abnormalcyusage: an abnormal state in which development has stopped prematurelyWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: devout Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language