indigenous (adj.) Look up indigenous at
"born or originating in a particular place," 1640s, from Late Latin indigenus "born in a country, native," from Latin indigena "sprung from the land, native," as a noun, "a native," literally "in-born," or "born in (a place)," from Old Latin indu (prep.) "in, within" + gignere (perfective genui) "beget," from PIE root *gene- "to produce, give birth, beget" (see genus).

Indu "within" is from archaic endo, which is cognate with Greek endo- "in, within," from PIE *endo-, extended form of root *en "in" (see in (adv.)). Related: Indigenously.