Proto-West Germanic *swak

→ English swack (derived)

→ Afrikaans swak (inherited)

→ German schwach (inherited)

→ West Frisian swak (inherited)

→ Indonesian soak (derived)

→ Luxembourgish schwaach (inherited)

→ Norwegian Bokmål svak (derived)

→ Dutch zwak (inherited)

→ Norwegian Nynorsk svak (derived)

→ Plautdietsch schwak (inherited)

→ Saterland Frisian swäk (inherited)

→ Swedish svag (derived)

→ Yiddish שוואַך (inherited)