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Definition of abnormal

abnormal

/æbˈnɔːr.məl/
ab · nor · mal

Adverb:abnormally
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abnormal Lexical Profile

abnormal Game Scores & Validity

• adjective

1

Deviating from what is normal, usual, or expected, typically in a way that is undesirable, problematic, or worrying.

Example

"The region experienced an abnormal amount of rainfall this summer, leading to widespread flooding."


2

In medicine and psychology, differing from standard anatomical structure, physiological function, or behavioral patterns in a manner indicative of disease, disorder, or maladaptation.

Example

"The physician ordered a follow-up biopsy after the patient's screening revealed abnormal cell growth."

Synonyms
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Antonyms
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Word Nuance & Usage

While 'subnormal' specifically indicates falling below a standard or average, 'abnormal' refers to any deviation from the norm—often carrying a clinical or undesirable connotation, unlike 'exceptional', which usually implies positive rarity.

• Rhymes for abnormal

Word Origin & Etymology

Borrowed in the mid-19th century from French 'anormal' and reshaped after Latin 'abnormis' ('departing from the rule'), formed from 'ab-' ('away from') and 'norma' ('carpenter's square, rule, pattern'), displacing earlier English 'abnormous'.

Cite this Entry


Wordmom. (2026). Definition of Abnormal. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/abnormal
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