a ‧ nom ‧ a ‧ lous /əˈnɒmələs $ əˈnɑː-/ BrE AmE adjective formal
[ Date: 1600-1700 ; Language: Late Latin ; Origin: anomalus , from Greek , 'uneven, anomalous' , from an- 'not' + homalos 'even' ]
different from what you expected to find:
a highly anomalous situation
anomalous results
—anomalously adverb