Where does “palliativus” come from?

palliativus (New Latin) comes from Latin palliatus, from Latin pallium — cloak; coverlet.

Ancestry of “palliativus”, step by step

Step	Language	Word	Meaning
1	Latin	palliatus	dressed in a pallium, cloaked; covered, protected
2	Latin	pallium	cloak; coverlet

palliativus — Etymology, Origin & Word History | Etymology Explorer