Synonyms

abnormal

American

[ab-nawr-muhl] / æbˈnɔr məl /

adjective

not normal, average, typical, or usual; deviating from a standard.

abnormal powers of concentration; an abnormal amount of snow; abnormal behavior.

Synonyms:

odd, unnatural, deviant, irregular, aberrant, anomalous
extremely or excessively large.

abnormal profit.

abnormal British

/ æbˈnɔːməl /

adjective

not normal; deviating from the usual or typical; extraordinary
informal odd in behaviour or appearance; strange

"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

Related Words

See irregular.

Other Word Forms

abnormally adverb
abnormalness noun
superabnormal adjective
superabnormally adverb

Etymology

Origin of abnormal

First recorded in 1850–55; ab- + normal; replacing anormal, from Medieval Latin anōrmālus, variant of anōmālus anomalous, influenced by Latin norma norm

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Kalshi users had also notified the company about the abnormal trading activity.

From BBC

The study focused on people with metabolic syndrome, a cluster of conditions that includes excess body weight, high blood pressure, elevated blood sugar, and abnormal blood lipid levels.

From Science Daily

Amyloid and tau are abnormal proteins that accumulate gradually and are considered defining features of Alzheimer's disease.

From Science Daily

The key diagnostic feature of PoTS is a persistent and abnormal increase in heart rate after assuming an upright posture.

From BBC

During labour, monitoring indicated that her heartbeat was abnormal, but this was not acted on.

From BBC

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023