Where does “poikittaisesti” come from?

poikittaisesti (Finnish) comes from Finnish poikittainen, from Finnish poikittain, from Finnish poikki, from Finnish poikitse, from Finnish itse, from Proto-Finnic icek, from Hebrew יצחק — to laugh.

Ancestry of “poikittaisesti”, step by step

StepLanguageWordMeaning
1Finnishpoikittainentransverse, traverse; abeam
2Finnishpoikittaincrosswise, diagonally, obliquely; abeam
3Finnishpoikkibroken into two or more pieces; off; exhausted,...
4Finnishpoikitse(Scattered/strewn) here and there, all over (the place), (all) spread out
5Finnishitseoneself; used to emphasize the person of the head...
6Proto-Finnicicekself
7Hebrewיצחקto laugh
Every word from Hebrew יצחקEvery word from Proto-Finnic icekEvery word from Finnish itse