abnormality

UK: /ˌæbnɔː^rˈmælɪti/ US: /ˌæbnɔrˈmælɪti/ ,(ab′nôr mal′i tē)

Inflections of 'abnormality' (n): npl: abnormalities

WordReference Random House Unabridged Dictionary of American English © 2025

ab•nor•mal•i•ty  (ab′nôr mal′i tē), n., pl. -ties. 

1. an abnormal condition, state, or quality;
   irregularity;
   deviation.
2. an abnormal thing or event.

Also, abnormalcy. 

• abnormal + -ity 1850–55

Synonyms

anomaly, aberration, peculiarity, oddity, idiosyncrasy.

Collins Concise English Dictionary © HarperCollins Publishers::

abnormality / ˌæbnɔːˈmælɪtɪ/ noun ( -ties)

1. an abnormal feature, event, etc
2. deviation from the typical or usual; irregularity

WordReference Random House Learner's Dictionary of American English © 2025

ab•nor•mal /æbˈnɔrməl/   adj. 

1. not normal or usual:
   His wild behavior that day was clearly abnormal.

ab•nor•mal•i•ty /ˌæbnɔrˈmælɪti/  n. [countable] , pl. -ties. 
ab•nor•mal•ly, adv. See -norm-.

WordReference Random House Unabridged Dictionary of American English © 2025

ab•nor•mal  (ab nôr′məl), adj. 

1. not normal, average, typical, or usual;
   deviating from a standard:
   abnormal powers of concentration;
   an abnormal amount of snow;
   abnormal behavior.
2. extremely or excessively large:
   abnormal profit.

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

ab•nor′mal•ly, adv. 
ab•nor′mal•ness, n. 
Synonyms

• 1. anomalous, aberrant, irregular, deviant, unnatural, odd. See irregular.