exceptional

non·ex·cep·tion·al·ly, adverbpre·ex·cep·tion·al, adjectivepre·ex·cep·tion·al·ly, adverbqua·si-ex·cep·tion·al, adjectivequa·si-ex·cep·tion·al·ly, adverbsu·per·ex·cep·tion·al, adjectivesu·per·ex·cep·tion·al·ly, adverb

Can be confusedexceptionable exceptional

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for exceptionally

The news only got out to a few people in the building, who described the next day at work as exceptionally awkward.
Hagel Takes a Bullet for Obama: Inside the Defense Secretary’s Sudden Firing|Shane Harris, Tim Mak|November 24, 2014|DAILY BEAST
The Habsburg army, however, Watson contends, were exceptionally bloodthirsty.
How WWI Produced the Holocaust|J.P. O’Malley|November 21, 2014|DAILY BEAST
An exceptionally large first run of 200,000 copies was reportedly printed in Germany for the same reason.
Hollande's Jilted Lover Valerie Trierweiler Tells All|Tracy McNicoll|September 3, 2014|DAILY BEAST
Chinese officials were much more concerned about internal issues in an exceptionally diverse empire.
We're Still Fighting the Opium Wars|William O’Connor|August 28, 2014|DAILY BEAST

His family memoir, Sweet and Low, is a tour de force of reporting and memory—tender, curious, and exceptionally funny.
The Stacks: How Leonard Chess Helped Make Muddy Waters|Alex Belth|August 2, 2014|DAILY BEAST
The only school which was exceptionally interesting was the School of Languages.
Changing China|William Gascoyne-Cecil
He also wrote a supplement of three volumes, entitled "Lee's Lieutenants," which was exceptionally well received.
Hallowed Heritage: The Life of Virginia|Dorothy M. Torpey
Towards the end of his work the chronicler is exceptionally abrupt and disconnected.
Expositor's Bible: Ezra, Nehemiah, and Esther|Walter Adeney
The Romans regarded the Etruscans as exceptionally skillful in such matters.
Selections from Viri Romae|Charles Franois L'Homond
Menof consummate power may sometimes put their handsto the business; but exceptionally.2.
On the Old Road Vol. 1 (of 2)|John Ruskin

British Dictionary definitions for exceptionally

exceptional

/ (ɪkˈsɛpʃənəl) /

adjective

forming an exception; not ordinary

having much more than average intelligence, ability, or skill

Derived Formsexceptionally, adverb

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for exceptionally