exceptional
Concise Oxford English Dictionary © 2008 Oxford University Press:
exceptional/ɪkˈsepʃənl/
▶adjective unusual; not typical.
■ unusually good.
▶noun an item in a company's accounts arising from its normal activity but much larger or smaller than usual.– derivatives
exceptionality noun,
exceptionally adverb.
exceptionality noun,
exceptionally adverb.
'exceptional' also found in these Oxford entries:

