Far beyond what is usual in magnitude or degree:
— An exceptional memory.
Roget 83: uncomformable, exceptional; abnormal, abnormous†; anomalous, anomalistic; out of order, out of place, out of keeping, out of tune, out of one's element; irregular, arbitrary; teratogenic; ... show more
Polish: nieczęsty, rzadki
Surpassing what is common or usual or expected:
— Exceptional kindness.
Deviating widely from a norm of physical or mental ability; used especially of children below normal in intelligence.
Moby thesaurus: aberrant, abnormal, absolute, anomalous, appalling, astonishing, beguiling, bewildering, celebrated, certain, concrete, conspicuous, crank, crankish, cranky, crotchety, deficient, defined, definite, detailed ... show more.
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