- not normal, average, typical, or usual; deviating from a standard: abnormal powers of concentration; an abnormal amount of snow; abnormal behavior.
- extremely or excessively large: abnormal profit.
Origin of abnormal
SynonymsSee more synonyms for on Thesaurus.com
Examples from the Web for abnormal
The problem, though, is that this advice presumes that death threats are rare and abnormal.Cover-Ups and Concern Trolls: Actually, It's About Ethics in Suicide Journalism
January 3, 2015
As the system booted up, Beck noticed that an abnormal number of terminals were active.The Intern Who Birthed The KAL007 Conspiracy Theories
September 8, 2014
Robyn was in her senior year of college in January 2008 when she found out she had an abnormal pap smear.
Erica was 22 when her doctor called her and said she had an abnormal pap smear.
Neurologist Oliver Sacks says the syndrome helps give the Team USA goalie ‘abnormal quickness.’Why Tourette’s May Be Tim Howard’s Secret Weapon on the Field
July 3, 2014
It was composed of the grim psychological laws that govern the abnormal.Viviette
William J. Locke
But this is abnormal and rather an affectation of technical skill.The Dramatic Values in Plautus
Wilton Wallace Blancke
Eccentric, they call me; as if Nature and beauty were abnormal!The Bacillus of Beauty
Marcia knew very well that the family circumstances were abnormal.The Coryston Family
Mrs. Humphry Ward
You will remember that these are all of the abnormal type of their grandfather.
- not normal; deviating from the usual or typical; extraordinary
- informal odd in behaviour or appearance; strange
Word Origin and History for abnormal
1835, displaced older abnormous (1742) and rival anormal (1835) under influence of Latin abnormis "deviating from a rule," from ab- "off, away from" (see ab-) + norma "rule" (see norm). The older forms were via Old French anormal (13c.), from Medieval Latin anormalos, from Greek anomalos, from an- "not" + homalos, from homos "same." The Greek word was altered in Latin by association with norma. Related: Abnormally.