Where does “चचिया सास” come from?

चचिया सास (Hindi) comes from Hindi सास, from Sauraseni Prakrit ?????, from Sanskrit श्वश्रू, from Proto-Indo-Aryan swaśrúH, from Proto-Indo-Iranian swaćrúH, from Proto-Indo-European sweḱrúh₂, from Proto-Indo-European swéḱuros — father-in-law.

चचिया सास (Hindi): paternal aunt-in-law; husband's or wife's paternal aunt

Definitions

  1. paternal aunt-in-law; husband's or wife's paternal aunt

Ancestry of “चचिया सास”, step by step

चचिया सास traces back through two separate lines of ancestry.

via Hindi सास

StepLanguageWordMeaning
1Hindiसासmother-in-law
2Sauraseni Prakrit?????—
3Sanskritश्वश्रूa mother-in-law
4Proto-Indo-AryanswaśrúH—
5Proto-Indo-IranianswaćrúHa mother-in-law
6Proto-Indo-Europeansweḱrúh₂mother-in-law
7Proto-Indo-Europeanswéḱurosfather-in-law

via Hindi चचिया

StepLanguageWordMeaning
1Hindiचचिया(of a cousin brother/sister) related through one's paternal uncle
2Hindiचाचाfather's younger brother
3Prakrit𑀘𑀸𑀘𑁆𑀘uncle
Every word from Proto-Indo-European swéḱuros →Every word from Proto-Indo-European sweḱrúh₂ →Every word from Proto-Indo-Iranian swaćrúH →