Where does “laskiaistiistai” come from?

laskiaistiistai (Finnish) comes from Finnish tiistai, from Old Swedish tisdagher, from Old Norse týsdagr, from Proto-Germanic *Tīwas dag, from Latin dīēs Martis, from Latin diēs, from Proto-Italic djēm, from Proto-Italic *djous — to be bright; sky, heaven.

laskiaistiistai (Finnish): Shrove Tuesday

Definitions

  1. Shrove Tuesday

Ancestry of “laskiaistiistai”, step by step

laskiaistiistai traces back through two separate lines of ancestry.

via Finnish tiistai

StepLanguageWordMeaning
1FinnishtiistaiTuesday
2Old SwedishtisdagherTuesday
3Old NorsetýsdagrTuesday
4Proto-Germanic*Tīwas dag
5Latindīēs MartisTuesday
6LatindiēsA day, particularly
7Proto-Italicdjēmaccusative singular of *djous
8Proto-Italic*djous
9Proto-Indo-Europeandyḗwssky, heaven; sky god
10Proto-Indo-Europeandyéwssky, heaven
11Proto-Indo-Europeandyew-to be bright; sky, heaven

via Finnish laskiainen

StepLanguageWordMeaning
1FinnishlaskiainenShrovetide; Shrove Tuesday
2Finnish-iäinenFront vowel variant of -iainen
3Finnish-inen-like, -ous, -y; -en; Creates adjectives from...
4Finnish-uusForms nouns from adjectives, expressing a quality
5Proto-Finnic-uc-ness, -hood
Every word from Proto-Indo-European dyew-Every word from Proto-Indo-European dyéwsEvery word from Proto-Indo-European dyḗws