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German Rost
German Lattenrost (link)
German rösten (link)
English roast (cognate)
Old French rostir (derived)
Proto-Germanic *rustaz (inherited)
Middle High German rost (inherited)
Middle High German rōst (inherited)
Old High German rost (inherited)
Old High German rōst (inherited)
Proto-Indo-European *h₁rewdʰ- (root)
Proto-Indo-European *rudʰso- (derived)
Proto-Indo-European *h₁rewdʰ- (mention)
Dutch rooster (cognate)

English rust (cognate)
English roost (cognate)
German rostig (suffix)
German rostfrei (compound)
German Rostkatze (affix)
German Rostschutz (compound)
German rostbraun (compound)
German rostrot (compound)
German Rostbraten (compound)
Hungarian rost (mention)
Luxembourgish Rascht (cognate)
Polish ruszt (borrowed)