Proto-Germanic *fimftehun

→ English fifteen (inherited)

→ Afrikaans vyftien (inherited)

→ Old English fiftiene (inherited)

→ Cimbrian vüchtzane (inherited)

→ Cimbrian büusane (inherited)

→ Danish femten (derived)

→ Middle English fiftene (inherited)

→ Faroese fimtan (derived)

→ Westrobothnian femtan (inherited)

→ Old Danish fæmtan (derived)

→ Old Danish fæmtæn (inherited)

→ Old Swedish fæmtan (derived)

→ Gothic 𐍆𐌹𐌼𐍆𐍄𐌰𐌹𐌷𐌿𐌽 (inherited)

→ Icelandic fimmtán (derived)

→ Norwegian Bokmål femten (derived)

→ Dutch vijftien (inherited)

→ Old Norse fimmtán (inherited)

→ Old Norse fimtán (inherited)

→ Old Saxon fiftein (inherited)

→ Elfdalian femtǫ (inherited)

→ Saterland Frisian füüftien (inherited)

→ Swedish femton (inherited)

→ Yiddish פֿופֿצן (inherited)