Part of speech: Adjective
not normal; not typical or usual or regular or conforming to a norm
Example: abnormal powers of concentration; abnormal amounts of rain; abnormal circumstances; an abnormal interest in food
Part of speech: Adjective
departing from the normal in e.g. intelligence and development
Example: they were heartbroken when they learned their child was abnormal; an abnormal personality
Part of speech: Adjective
much greater than the normal
Example: abnormal profits; abnormal ambition
The word "abnormal" comes from Ancient Greek ἀνώμαλος, which comes from Latin abnormis.
ab- – A related word in the same word family.
normal – A related word in the same word family.
anormal – A related word in the same word family.
The Greek language preserved ancient Indo-European roots better than most other languages.