อาจหาญ ภาษาอังกฤษ

From Middle English bold, from Old English bold, blod, bolt, botl (“house, dwelling-place, mansion, hall, castle, temple”), from Proto-Germanic *budlą, *buþlą (“house, dwelling”), from Proto-Indo-European *bʰew- (“to grow, wax, swell”) or *bʰuH-. Cognate with Old Frisian bold (“house”) (whence North Frisian bol, boel, bøl (“house”)), North Frisian bodel, budel (“property, inheritance”), Middle Low German būdel (“property, real estate”). Related to build.