Estonian soo

← Estonian too (mention)

← Finnish suo (cognate)

← Proto-Finnic *soo (inherited)

← Proto-Uralic *toxi (mention)

→ Estonian sookurg (compound)

→ Finnish suo (cognate)

→ Ingrian soo (cognate)

→ Livonian sūo (cognate)

→ Livvi suo (cognate)