Where does “nailfast” come from?

nailfast (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.

nailfast (English): Permanently attached

Definitions

  1. Permanently attached

Ancestry of “nailfast”, step by step

nailfast 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 nail

StepLanguageWordMeaning
1EnglishnailThe thin, horny plate at the ends of fingers and...
2Middle EnglishnailAlternative form of nayl
3Old Englishnæġlnail
4Proto-West Germanicnaglnail; nail or peg used for fastening
5Proto-Germanicnaglaznail; nail or peg used for fastening
6Proto-Indo-Europeanh₃nogʰ-claw, nail; nail
Every word from Proto-Indo-European -no-Every word from Proto-Germanic -īnazEvery word from Old English -en