[ uh-ber-uhnt, ab-er- ]
/ əˈbɛr ənt, ˈæb ər- /


departing from the right, normal, or usual course.
deviating from the ordinary, usual, or normal type; exceptional; abnormal.


an aberrant person, thing, group, etc.

Origin of aberrant

First recorded in 1820–30, aberrant is from the Latin word aberrant- (stem of aberrāns, present participle of aberrāre to deviate). See ab-, errant

Related forms

ab·er·rance, ab·er·ran·cy, nounab·er·rant·ly, adverb

Can be confused

aberrant abhorrent
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for aberrancy


/ (æˈbɛrənt) /


deviating from the normal or usual type, as certain animals from the group in which they are classified
behaving in an abnormal or untypical way
deviating from truth, morality, etc

Derived Forms

aberrance or aberrancy, noun

Word Origin for aberrant

rare before c19: from the present participle of Latin aberrāre to wander away
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

Medicine definitions for aberrancy


[ ă-bĕrənt, ăbər- ]


Deviating from the usual course, as certain ducts, vessels, or nerves.
Deviating from the normal; untrue to type.
Out of place; ectopic.

Related forms

ab•erran•cy n.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.