Where does “twenty-ninth” come from?

twenty-ninth (English) comes from English -th, from Middle English -eth, from Old English -eþ, from Proto-Germanic -þi, from Proto-Indo-European -ti.

twenty-ninth (English): The ordinal form of the number twenty-nine

Definitions

  1. The ordinal form of the number twenty-nine

Ancestry of “twenty-ninth”, step by step

StepLanguageWordMeaning
1English-thUsed to form nouns from verbs of action; Used to...
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
Every word from Proto-Indo-European -tiEvery word from English -thEvery word from Middle English -eth