1.Definition: departing from the normal in e.g. intelligence and development

"They were heartbroken when they learned their child was abnormal", "An abnormal personality"

2.Definition: much greater than the normal

"Abnormal profits", "Abnormal ambition"

3.Definition: not normal; not typical or usual or regular or conforming to a norm

"Abnormal powers of concentration", "Abnormal amounts of rain", "Abnormal circumstances", "An abnormal interest in food"

Related Adjective(s):unnatural