Proto-Germanic *fruskaz

→ English frosh (inherited)

→ English frosk (inherited)

→ Old English frosc (inherited)

→ Cimbrian bross (inherited)

→ Cimbrian vrosch (inherited)

→ German Frosch (inherited)

→ Middle English frossh (inherited)

→ Faroese froskur (derived)

→ West Frisian froask (inherited)

→ Central Franconian Frösch (inherited)

→ Icelandic froskur (derived)

→ Luxembourgish Fräsch (inherited)

→ Norwegian Bokmål frosk (derived)

→ Dutch vors (inherited)

→ Norwegian Nynorsk frosk (derived)

→ Old Norse froskr (inherited)

→ Pennsylvania German Frosch (inherited)

→ Yiddish פֿראָש (derived)