Where does “appetescere” come from?

appetescere (Vulgar Latin) comes from Latin appetere, from Latin Ad, from Latin illic, from Latin ille, from Latin olle, from Proto-Italic *olnos — that.

Ancestry of “appetescere”, step by step

Step	Language	Word	Meaning
1	Latin	appetere	second-person singular future passive indicative...
2	Latin	Ad	toward, to
3	Latin	illic	he, she, it, yonder, that, overthere; in that...
4	Latin	ille	that; those; "; demonstrative pronoun "; that...
5	Latin	olle	Archaic form of ille
6	Proto-Italic	*olnos	that

Every word from Proto-Italic *olnos →