Slavic
[ slah-vik, slav-ik ]
/ ˈslɑ vɪk, ˈslæv ɪk /
noun
a branch of the Indo-European family of languages, usually divided into East Slavic (Russian, Ukrainian, Byelorussian), West Slavic (Polish, Czech, Slovak, Sorbian), and South Slavic (Old Church Slavonic, Macedonian, Bulgarian, Serbo-Croatian, Slovene).
adjective
of or relating to the Slavs or their languages.
Also
Slavonic.