Where does “Deccan” come from?

Deccan comes from Hindi दक्खिन, from Sauraseni Prakrit 𑀤𑀓𑁆𑀔𑀺𑀡, from Sanskrit दक्षिण meaning south, ultimately from Proto-Indo-European deḱs-.

Ancestry of “Deccan”, step by step

Deccan traces back through two separate lines of ancestry.

via Hindi दक्खिन

StepLanguageWordMeaning
1Hindiदक्खिनthe south, southern direction; the Deccan
2Sauraseni Prakrit𑀤𑀓𑁆𑀔𑀺𑀡
3Sanskritदक्षिणright, righthand; located on the right; southern;...
4Proto-Indo-Iraniandáćšinasright; south
5Proto-Indo-Europeandeḱs-i-no-s
6Proto-Indo-Europeandeḱs-right

via Urdu دکھن

StepLanguageWordMeaning
1Urduدکھنthe south, southern direction
Every word from Proto-Indo-European deḱs-Every word from Proto-Indo-European deḱs-i-no-sEvery word from Proto-Indo-Iranian dáćšinas
Deccan — Etymology, Origin & Word History | Etymology Explorer