A possible causative verbal suffix in ugrudâ- “to overshadow”, as suggested by Carl Hostetter and Patrick Wynne (VSH/24). It may be related to Primitive Elvish causative suffix ✶-tā. Carl Hostetter and Patrick Wynne instead suggested (VSH/24) it may be related to the Adûnaic prepositional suffix -ada “to, toward”.
* -dâ-suffix. verbal suffix