'artily' originates from English, ultimately from Latin, specifically the word 'ars', where 'ars' meant 'skill' or 'craft'.

'artily' developed from the English noun 'art' (from Old French 'art', from Latin 'ars') with the adverbial suffix '-ly', forming the modern English adverb 'artily'.

Initially related to 'skill' or 'craft' (i.e., 'with skill'), over time the sense shifted toward 'in an affected or showy manner' and gained a nuance of artifice.