1903, "in the style or manner of George Bernard Shaw" (1856-1950), from the Latinized form of his surname. An earlier unlatinized form was Shawian (1894).
Entries linking to shavian
shaw n.
"strip of wood forming the border of a field," 1570s, a respelling of Middle English shau, shaue "wood, forest, grove, thicket," from Old English sceaga "copse," cognate with North Frisian skage "farthest edge of cultivated land," Old Norse skage "promontory," and perhaps with Old English sceaga "rough matted hair" (see shag (n.)). The Old English word also is the source of the surname Shaw (attested from late 12c.) in all its variations.