Where does “durstn't” come from?

durstn't (English) comes from English Not, from Middle English not, from Middle English nought, from Old English nōwiht, from Old English ne, from Old English ealles, from Old English -es, from Proto-Germanic -as — Creates action nouns or result nouns from verbs;...

durstn't (English): Contraction of durst not

Definitions

  1. Contraction of durst not

Ancestry of “durstn't”, step by step

durstn't traces back through two separate lines of ancestry.

via English Not

StepLanguageWordMeaning
1EnglishNot
2Middle Englishnotnot; nothing, nought; nobody, no person
3Middle Englishnoughtnothing, none; not; iniquitous, wicked
4Old Englishnōwiht
5Old Englishnenot; or, and not; "ne... ne..." is used to mean "...
6Old Englisheallescompletely, wholly, entirely; totally,...
7Old English-espossessive marker, indicating that an object...
8Proto-Germanic-asused in formation of adverbs
9Proto-Indo-European-ēsPrimarily forms adjectival bahuvrīhi compounds
10Proto-Indo-European-ess
11Proto-Indo-European-osCreates action nouns or result nouns from verbs;...

via English durst

StepLanguageWordMeaning
1Englishdurstsimple past tense of dare
2Germandurstthirst
3Middle High Germandurst
4Old High Germandurst
5Proto-West Germanicþurstuthirst
6Germanic*þurstuz
7Proto-Indo-Europeanters-dry
Every word from Proto-Indo-European -os