←
English otter (cognate)
←
Old French lutre (inherited)
←
Proto-Indo-European (inherited)
←
Proto-Indo-European *udrós (mention)
←
Proto-Indo-European *wed- (mention)
←
Latin lutra (inherited)
←
Occitan luria (cognate)
→
Esperanto lutro (mention)
→
Romanian lutră (borrowed)
→
Romanian lutru (borrowed)