different from what is normal, usual or expected
different from standard or norm
Cases of word usage
1) a thing or part that is abnormal (abnormality)
2) the abnormal power of seeing in the mind or what exists beyond the normal range of the senses (clairvoyance)
3) the abnormal fear of being in confined places (e.g. a lift) (claustrophobia)
4) (in a length of wire, pipe, cord etc) such as may cause a break or obstruction; something abnormal in a person's way of thinking (kink)
5) a mental illness with anxiety, excited behaviour, abnormal concern etc caused by disorders of the nervous system or by something in the subconscious mind (neurosis)