←
Proto-Germanic *þrīz (inherited)
←
Proto-Norse ᚦᚱᛁᛃᛟᛉ (inherited)
←
Proto-Indo-European *tréyes (inherited)
←
Old Norse þrír (inherited)
←
Old Norse þrēa (mention)
←
Old Norse þrjá (mention)
←
Old Norse þrēaʀ (mention)
←
Old Norse þrjár (mention)
→
Icelandic þrír (cognate)
→
Norwegian Bokmål tre (mention)
→
Norwegian Nynorsk tre (mention)
→
Norwegian Nynorsk tri (mention)
→
Norwegian trí (mention)
→
Norwegian trir (mention)