aberrant Meaning, Definition & Usage

  1. noun one whose behavior departs substantially from the norm of a group
  2. adjective satellite markedly different from an accepted norm
    deviant; deviate.
    • aberrant behavior
    • deviant ideas

WordNet

Ab*er"rant adjective
Etymology
L. aberrans, -rantis, p.pr. of aberrare.
Definitions
  1. See Aberr.] Wandering; straying from the right way.
  2. (Biol.) Deviating from the ordinary or natural type; exceptional; abnormal.
    The more aberrant any form is, the greater must have been the number of connecting forms which, on my theory, have been exterminated. Darwin.

Webster 1913