Where does “indigo” come from?

indigo (Italian) comes from Italian indigere, from Latin indigeo, from Latin indu-, from Latin indu, from Old Latin endo, from Proto-Indo-European h₁n̥dó, from Proto-Indo-European h₁én — in.

indigo (Italian): first-person singular present indicative of...

Definitions

first-person singular present indicative of...

Ancestry of “indigo”, step by step

Step	Language	Word	Meaning
1	Italian	indigere	to have need
2	Latin	indigeo	I need, want, require, lack; I long for, desire
3	Latin	indu-	within, in; inside
4	Latin	indu	Archaic form of in; in, within
5	Old Latin	endo	in
6	Proto-Indo-European	h₁n̥dó	into, inside
7	Proto-Indo-European	h₁én	in

Every word from Proto-Indo-European h₁én →Every word from Proto-Indo-European h₁n̥dó →Every word from Old Latin endo →