Where does “sitooterie” come from?

sitooterie (English) comes from English sit, from Middle English sitten, from Old English sittan, from Proto-West Germanic *sittjan — to sit.

Ancestry of “sitooterie”, step by step

StepLanguageWordMeaning
1EnglishsitTo be in a position in which the upper body is...
2Middle Englishsittento sit
3Old Englishsittanto sit
4Proto-West Germanic*sittjanto sit
Every word from Proto-West Germanic *sittjan