Where does “saastuma” come from?

saastuma (Finnish) comes from Finnish saastua, from Finnish -ua, from Proto-Finnic -üdäk — Forms mainly passive or anticausative verbs.

saastuma (Finnish): polluted part or spot

Definitions

  1. polluted part or spot

Ancestry of “saastuma”, step by step

StepLanguageWordMeaning
1Finnishsaastuato become polluted; to become contaminated
2Finnish-uaForms stative or inchoative intransitive verbs...
3Proto-Finnic-üdäkForms mainly passive or anticausative verbs
Every word from Proto-Finnic -üdäk →Every word from Finnish -ua →Every word from Finnish saastua →