These notions are at least possible, and would they not vitiate your argument?
Minshew interprets the verb deboshe, "to corrupt, make lewde, vitiate."
Small-pox does not vitiate the blood of a people; this disease does.
Above all, do not, by dint of judging, vitiate your faculty of tasting.
This, however, did not vitiate the titles of these companies to said lands.