Old English teoru

← German Teer (cognate)

← English tree (cognate)

← Proto-Germanic *terwą (inherited)

← Proto-Germanic *trewą (cognate)

← Middle Low German ter (cognate)

← Proto-Indo-European *derwo- (derived)

← Proto-Indo-European *dóru (derived)

← Dutch teer (cognate)

← Old Norse tjara (cognate)

→ English tar (inherited)

→ Old English eorþteoru (compound)

→ Middle English ter (inherited)

→ Middle English teer (inherited)