Where does “eightieth” come from?

Eightieth comes from Middle English -th, Old English -þ, Proto-Germanic -iþō, and Proto-Indo-European -ti, a suffix forming ordinal numbers from cardinal numerals.

eightieth (English): The ordinal form of the number eighty; The person...

Definitions

  1. The ordinal form of the number eighty; The person...

Ancestry of “eightieth”, step by step

StepLanguageWordMeaning
1English-eth"goeth, "playeth; used to create ordinal numbers...
2Middle English-ethUsed to form the third-person singular present...
3Old English-eþThird person singular present indicative ending of class 1 weak verbs
4Proto-Germanic-þi—
5Proto-Indo-European-ti—

Words derived from “eightieth”

Every word from Proto-Indo-European -ti →Every word from English -eth →Every word from Middle English -eth →