Swedish /ˈswiː.dɪʃ/adjective 2noun 1 adjective2 •from Sweden, or connected with its people or their languageThis simulation aims at describing the hydrological conditions at a Swedish deep repository of nuclear waste during a glaciation. — 2006 •Of or pertaining to the Swedish language. noun1 •A North Germanic language spoken primarily in Sweden and Finland, and by a very small minority in Estonia.