Where does “exceptionary” come from?

exceptionary (English) comes from English exception, from Middle English exception, from Anglo-Norman excepcioun, from Old French excepcion, from Latin exceptiō, from Latin -tiō, from Latin dissertātiō, from Latin dissertus — small stone, pebble; gravel, rubble.

Ancestry of “exceptionary”, step by step

exceptionary traces back through two separate lines of ancestry.

via English exception

StepLanguageWordMeaning
1EnglishexceptionThe act of excepting or excluding; exclusion;...
2Middle Englishexception
3Anglo-Normanexcepcioun
4Old Frenchexcepcion
5LatinexceptiōAn exception or objection in law
6Latin-tiōtion, -ation, -ing
7Latindissertātiō(spoken) dissertation, discourse, disquisition
8Latindissertusarranged, disposed; explained
9Latindissereresecond-person singular future passive indicative...
10Latindis-asunder, apart, in two; reversal, removal;...
11Latincalceusshoe
12Latincalxlimestone; chalk; the finish line
13Ancient Greekχάλιξsmall stone, pebble; gravel, rubble

via English ary

StepLanguageWordMeaning
1Englisharyany
2Englishe'erContraction of ever
3EnglisheverAlways, frequently, forever; Continuously,...
4Middle Englisheverever
5Old Englishǣfre
Every word from Ancient Greek χάλιξ