ABERRANT
aberrant, deviant, deviate
(adjective) markedly different from an accepted norm; “aberrant behavior”; “deviant ideas”
aberrant
(noun) one whose behavior departs substantially from the norm of a group
Source: WordNet® 3.1
Etymology
Adjective
aberrant (comparative more aberrant, superlative most aberrant)
Differing from the norm. [First attested sometime between the mid 16th century and the early 17th century.]
(sometimes, figuratively) Straying from the right way; deviating from morality or truth. [First attested in the mid 18th century.]
(botany, zoology) Deviating from the ordinary or natural type; exceptional; abnormal. [First attested in the mid 19th century.]
Synonyms
• (differing from the norm): abnormal, exceptional, unusual; see also strange
• (straying from the right way): devious, errant, immoral; see also immoral
• (deviating from the natural type)
Antonyms
• (differing from the norm): normal, regular, true; see also normal
• (straying from the right way): correct, right, straight; see also virtuous
• (deviating from the natural type): continuous
Noun
aberrant (plural aberrants)
A person or object that deviates from the rest of a group.
(biology) A group, individual, or structure that deviates from the usual or natural type, especially with an atypical chromosome number.
Synonyms
• (thing deviating from the group): deviant, freak; see also anomaly
• (thing deviating from the natural type)
Source: Wiktionary
Ab*er"rant, a. Etym: [L. aberrans, -rantis, p.pr. of aberrare.]
Definition: See Aberr.]
1. Wandering; straying from the right way.
2. (Biol.)
Definition: 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.
Source: Webster’s Unabridged Dictionary 1913 Edition