Where does “contrarissimo” come from?

contrarissimo (Italian) comes from Italian contrario, from Latin contrarius, from Latin contrā, from Latin ubī, from Latin cubī, from Proto-Italic *kʷuðei — where.

Ancestry of “contrarissimo”, step by step

Step	Language	Word	Meaning
1	Italian	contrario	contrary, opposite, alien; unfavourable, adverse;...
2	Latin	contrarius	opposite, opposed, contrary, conflicting,...
3	Latin	contrā	against
4	Latin	ubī	where? in what place?, in which place?
5	Latin	cubī	—
6	Proto-Italic	*kʷuðei	where

Every word from Proto-Italic *kʷuðei →Every word from Latin cubī →Every word from Latin ubī →