Where does “ruosteisuus” come from?

ruosteisuus (Finnish) comes from Finnish ruosteinen, from Finnish ruoste, from Proto-Finnic roostek, from Proto-Germanic rustaz, from Proto-Indo-European rudʰso-, from Proto-Indo-European h₁rewdʰ- — red.

ruosteisuus (Finnish): rustiness

Definitions

  1. rustiness

Ancestry of “ruosteisuus”, step by step

StepLanguageWordMeaning
1Finnishruosteinenrusty
2Finnishruosterust; rusty; inessive case is sometimes better...
3Proto-Finnicroostekrust
4Proto-Germanicrustazrust
5Proto-Indo-Europeanrudʰso-red
6Proto-Indo-Europeanh₁rewdʰ-red
Every word from Proto-Indo-European h₁rewdʰ- →Every word from Proto-Indo-European rudʰso- →Every word from Proto-Germanic rustaz →