'abnormalcy' originates from English, specifically the word 'abnormal,' where 'ab-' meant 'away from' and 'normal' meant 'conforming to a standard.'

'abnormal' changed from the Latin word 'abnormis' and eventually became the modern English word 'abnormalcy.'

Initially, it meant 'deviating from the norm,' and this meaning has largely remained the same in modern usage.