Where does “sitfast” come from?

sitfast (English) comes from English fast, from Middle English fast, from Old English fæste, from Old English -e, from Old English -en, from Old Norse -inn, from Proto-Norse -īna-, from Proto-Germanic -īnaz — adjectival suffix.

sitfast (English): A callosity with inflamed edges, on the back of a...

Definitions

  1. A callosity with inflamed edges, on the back of a...

Ancestry of “sitfast”, step by step

sitfast traces back through two separate lines of ancestry.

via English fast

StepLanguageWordMeaning
1EnglishfastFirmly or securely fixed in place; stable; Firm...
2Middle Englishfastfast quickly
3Old Englishfæstefirmly, fastly, tightly
4Old English-eforming adverbs from adjectives; -ly
5Old English-enmæġþ + API → mæġden; cocc + API → cycen, cicen;...
6Old Norse-innUsed to create adjectives from nouns, meaning...
7Proto-Norse-īna-
8Proto-Germanic-īnaz-en
9Proto-Indo-European-iHnosCreates adjectives of materials
10Proto-Indo-European-no-adjectival suffix

via English sit

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-Indo-European -no-