Where does “оудавлѥнина//ⱆⰴⰰⰲⰾⰵⱀⰻⱀⰰ” come from?

Words derived from “оудавлѥнина//ⱆⰴⰰⰲⰾⰵⱀⰻⱀⰰ

оудавлѥнина//ⱆⰴⰰⰲⰾⰵⱀⰻⱀⰰ — Etymology, Origin & Word History | Etymology Explorer