Proto-Indo-European Roots

Root/Stem: *daiwér-
Meanings:  husband's brother
Hellenic Greek daér 'husband's brother', acc. daera
Italic Latin lévir 'husband's brother'
Indic Sanskrit devar- 'husband's brother'
Armenian Armenian taigr 'husband's brother'
Germanic Common Germanic *taikur 'husband's brother' >
Old High German zeihhur, Old English tácor 'husband's brother'
Baltic Lithuanian dieveris 'husband's brother', Latvian dieveris
Slavic Common Slavic *de.verï 'husband's brother' >
Russian dever' 'husband's brother', Ukrainaian diver, Belorussian dzever', Bulgarian & Slovene dever, Serbo-Croatian djever, Polish dziewierz
Notes: Another family term with the same *-ér suffix denoting family relations. The most interesting cognate here is Latin where we see the initial mutation d > l, as in a few other Latin words. It is interesting also to analyse a Lithuanian word laigonas 'wife's brother' here.