abnormalEnglishOxford Dictionary of Englishabnormal /abˈnɔːml / ▸ adjective deviating from what is normal or usual, typically in a way that is undesirable or worrying: participants with abnormal results were invited to undergo further diagnostic testing this chapter will look at how we define abnormal behaviour. – ORIGIN early 19th century: from Latin abnormis ‘belonging to no clear school or party’ + -al.
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