Dravido-Koreanic, sometimes Dravido-Koreo-Japonic, is an abandoned proposal linking the Dravidian languages to Korean and (in some versions) to Japanese. A genetic link between the Dravidian languages and Korean was first hypothesized by Homer B. Hulbert in 1905. In his book The Origin of the Japanese Language (1970), Susumu Ōno proposed a layer of Dravidian (specifically Tamil) vocabulary in both Korean and Japanese. Morgan E. Clippinger gave a detailed comparison of Korean and Dravidian vocabulary in his article "Korean and Dravidian: Lexical Evidence for an Old Theory" (1984), but there has been little interest in the idea since the 1980s.