spacious (adj.)youdaoicibaDictYouDict[spacious 词源字典]
late 14c., from Old French spacios, espacios "roomy, spacious, extensive" (12c., Modern French spacieux), or directly from Latin spatiosus "roomy, ample" (Medieval Latin spaciosus), from spatium "room, space" (see space (n.)). Related: Spaciously; spaciousness.[spacious etymology, spacious origin, 英语词源]