Where does “индигов” come from?

индигов (Bulgarian) comes from Bulgarian инди́го, from German Indigo, from Spanish índigo, from Latin indicum, from Latin Indicus, from Ancient Greek ἰνδικός, from Ancient Greek Ἰνδία, from Ancient Greek Ἰνδός.

Ancestry of “индигов”, step by step

StepLanguageWordMeaning
1Bulgarianинди́гоindigo color
2GermanIndigoindigo, a dye; "Indigofera", plant traditionally...
3Spanishíndigoindigo; indigo plant
4Latinindicumgenitive plural of index; inflection of...
5LatinIndicusof India
6Ancient GreekἰνδικόςIndian, Indic
7Ancient GreekἸνδία
8Ancient GreekἸνδόςan inhabitant of India or the Indian...
9Old Persian𐏃𐎡𐎯𐎢𐏁India; people living beyond the Indus
10Sanskritसिन्धुa river, stream; flood, waters; ocean, sea
11Proto-Indo-Aryansíndʰuṣriver, ocean; flow
12Proto-Indo-Iraniansíndʰušriver, stream
13Sanskritसिन्धु॑
Every word from Sanskrit सिन्धु॑