Where does “who'da” come from?

who'da (English) comes from English WHO, from Middle English who, from Old English hwā, from Proto-West Germanic hwaʀ, from Proto-Germanic hwaz, from Proto-Indo-European kʷos, from Proto-Indo-European kʷ- — The primary interrogative root.

who'da (English): who would have

Definitions

  1. who would have

Ancestry of “who'da”, step by step

who'da traces back through two separate lines of ancestry.

via English WHO

StepLanguageWordMeaning
1EnglishWHO
2Middle Englishwhowho nominative
3Old Englishhwāwho
4Proto-West Germanichwaʀwho
5Proto-Germanichwazwho, what; whose; whom
6Proto-Indo-EuropeankʷosSee *kʷis
7Proto-Indo-Europeankʷ-The primary interrogative root

via English ’d

StepLanguageWordMeaning
1English’d
Every word from Proto-Indo-European kʷ-Every word from Proto-Indo-European kʷosEvery word from Proto-Germanic hwaz