Nego etymology in Latin

Latin word nego comes from Proto-Indo-European *h₁eǵ-, and later Proto-Italic *agjō (To assert.)

Dictionary entry	Language	Definition
*h₁eǵ-	Proto-Indo-European (ine)
*agjō	Proto-Italic (itc-pro)	To assert.
aio	Latin (lat)	I say, I assert, I say yes, I say no, I affirm, I assent.
nego	Latin (lat)	(intransitive) I refuse, say no. (transitive) I reject, refuse, say no to (something). I deny. I keep from, prevent.

Nego etymology