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English Thames
← Old English Temes (inherited)
← Old English Temese (mention)
← Proto-Celtic *tamesās (derived)
← Proto-Celtic *tames (mention)
← Proto-Celtic *temeslos (derived)
← Proto-Celtic *temos (mention)
← Proto-Celtic *dubros (cognate)
← Proto-Celtic *tā- (derived)
← Proto-Celtic *tāyo- (mention)
← Welsh Tafwys (cognate)
← Welsh dŵr (cognate)
← Welsh Teifi (cognate)
← Middle English Temese (inherited)
← Irish dobhar (cognate)
← Proto-Indo-European (derived)
← Proto-Indo-European (mention)
← Proto-Indo-European *témHos (mention)
← Proto-Indo-European *temH- (mention)
← Proto-Indo-European *dʰubrós (cognate)
← Proto-Indo-European *teh₂- (derived)
← Latin Tamesis (derived)
← Latin Tamesas (mention)
← Latin Tamarus (cognate)
← Latin Tefius (cognate)
← Latin Teifius (mention)
← Latin Tamaris (cognate)
← Latin Tamice (cognate)
← Latin Tamega (cognate)
← Latin Tamarus (cognate)
← Old Welsh Tebi (cognate)
← Old Welsh Teibi (mention)
← Portuguese Tâmega (cognate)

→ English Rom (link)
→ English swim the Thames (mention)
→ English Tamar (mention)
→ English Thameside (suffix)
→ English Thamesian (suffix)
→ English Thamesmead (affix)
→ Welsh Teifi (mention)
→ Welsh Tafwys (mention)
→ Welsh Taf (mention)
→ Greek Τάμεσης (mention)
→ Galician Tambre (cognate)
→ Italian Tammaro (mention)
→ Latin Tamesis (mention)
→ Latin Tamarus (mention)
→ Latin Tamaris (mention)
→ Latin Tamyras (mention)
→ Polish Tamiza (borrowed)