Where does “-ast” come from?

-ast (Old English) comes from Proto-Germanic -ōs, from Proto-Indo-European -ēs, from Proto-Indo-European -ess, from Proto-Indo-European -os — Creates action nouns or result nouns from verbs;...

-ast (Old English): Used to form the second person singular present indicative of class II weak verbs

Definitions

  1. Used to form the second person singular present indicative of class II weak verbs

Ancestry of “-ast”, step by step

StepLanguageWordMeaning
1Proto-Germanic-ōs—
2Proto-Indo-European-ēsPrimarily forms adjectival bahuvrīhi compounds
3Proto-Indo-European-ess—
4Proto-Indo-European-osCreates action nouns or result nouns from verbs;...
Every word from Proto-Indo-European -os →Every word from Proto-Indo-European -ēs →Every word from Proto-Germanic -ōs →