Not usual, different from what is normal or expected
Examples:
The abnormal weather patterns are causing concern.Her abnormal heartbeat prompted further tests.The structure showed abnormal signs of wear and tear.
Synonyms:
Antonyms:
Subnormal
/sʌbˈnɔːm(ə)l/
Used to describe something that is below the usual or expected level
Examples:
The engine's subnormal performance was a concern.Her subnormal score on the test surprised everyone.Living conditions in that area are subnormal.
Synonyms:
Antonyms:
Ways to tell them apart:
Abnormal starts with an A which can remind you of the word Above, as it often refers to things that deviate from what is usual or standard.
Subnormal starts with Sub, which can remind you of the prefix Sub meaning below or under, indicating something less than normal.
Remember Ab in abnormal can be associated with Away, as in away from normal.
Abnormal is often used in contexts where something is strange or unusual, whereas subnormal is more quantitative, suggesting something less than average.
If youre thinking about something exceeding regular bounds or limits, youll likely use abnormal. If considering a deficiency or reduced level, use subnormal.