←
Aragonese laco (cognate)
←
Esperanto lago (cognate)
←
Middle French lac (inherited)
←
Old French lac (inherited)
←
Old French lai (mention)
←
Old French lac (cognate)
←
Proto-Indo-European *lókus (inherited)
←
Proto-Italic *lakus (inherited)
←
Latin lacus (inherited)
←
Portuguese lago (cognate)
←
Sardinian lagu (cognate)
→
Franco-Provençal lac (cognate)
→
Sardinian lagu (cognate)