Where does “उनका” come from?

उनका (Hindi) comes from Hindi का, from Sanskrit कृ, from Proto-Indo-European kʷer- — to do; to make; to build.

उनका (Hindi): their

Definitions

  1. their

Ancestry of “उनका”, step by step

उनका traces back through two separate lines of ancestry.

via Hindi का

StepLanguageWordMeaning
1Hindiकाmarks the genitive case: of, belonging to; part...
2Sanskritकृto make
3Proto-Indo-Europeankʷer-to do; to make; to build

via Hindi उन

StepLanguageWordMeaning
1Hindiउनthose; him; her
Every word from Proto-Indo-European kʷer-Every word from Sanskrit कृEvery word from Hindi का