Japanish /d͡ʒəˈpæˌnɪʃ/ adjective1 •Resembling or characteristic of the Japanese or their culture or manners.The Japanish decor that characterized the post-1990s ramen specialty shop essentially marked a new relationship between the younger generation of Japanese and their understanding of national history. — 2014 formsmore Japanish · most Japanish