Where does “kastemato” come from?

kastemato (Finnish) comes from Finnish kaste, from Proto-Finnic kastek, from Proto-Finnic kastadak, from Proto-Finnic -tadak, from Proto-Uralic -ta- — Forms verbs from nouns; Forms causative verbs...

kastemato (Finnish): common earthworm, lob worm UK; nightcrawler US, dew worm Canada (Lumbricus terrestris) species of earthworms

Definitions

  1. common earthworm, lob worm UK; nightcrawler US, dew worm Canada (Lumbricus terrestris) species of earthworms

Ancestry of “kastemato”, step by step

kastemato traces back through two separate lines of ancestry.

via Finnish kaste

StepLanguageWordMeaning
1Finnishkastedew; baptism, christening
2Proto-Finnickastekdew
3Proto-Finnickastadakto wet, to soak; to dip, to immerse
4Proto-Finnic-tadakForms verbs from both nominal and verbal stems
5Proto-Uralic-ta-Forms verbs from nouns; Forms causative verbs...

via Finnish mato

StepLanguageWordMeaning
1Finnishmatoworm; maggot; tilde
2Proto-Finnicmatoworm
3Proto-Finno-Ugricmačo—
Every word from Proto-Uralic -ta- →Every word from Proto-Finnic -tadak →Every word from Proto-Finnic kastadak →