anomalousness, unusual person, anomoly, anomalism, deviant, straggle, deviance, aberrancy, aberration, deviation, more...

normal, regular, typical, usual, commonplace, standard

optical, magnetic, gravitational, electrical, radiation, sonic, more...

positive, congenital, apparent, strange, developmental, curious, rare, magnetic, common, true, negative

rare event,   rare occurence,   rare sight,   unexpected result,   rare thing,   unusual event,   strange occurrence,   quirk of nature,   strange event,   unexpected results