"You canker blossom!" 3 Shakespearean Insults
1831, from German Akkordion, from Akkord "musical chord, concord of sounds, be in tune" (cf. Italian accordare "to attune an instrument"); ultimately from same source as English accord (v.), with suffix on analogy of clarion, etc. Invented 1829 by piano-maker Cyrill Demian (1772-1847) of Vienna.