Where does “nielaisu” come from?

nielaisu (Finnish) comes from Finnish nielaista, from Finnish niellä, from Proto-Finnic neeldäk, from Proto-Uralic ńäle- — to swallow.

Ancestry of “nielaisu”, step by step

StepLanguageWordMeaning
1Finnishnielaistato swallow, gulp; to engulf, cover
2Finnishnielläto swallow
3Proto-Finnicneeldäkto swallow
4Proto-Uralicńäle-to swallow
Every word from Proto-Uralic ńäle-Every word from Proto-Finnic neeldäkEvery word from Finnish niellä