Webster's Revised Unabridged Dictionary · 1913

Disinherit

Disinherit , transitive verb

[Compare Disherit, Disheir.]

1.
To cut off from an inheritance or from hereditary succession; to prevent, as an heir, from coming into possession of any property or right, which, by law or custom, would devolve on him in the course of descent.
Of how fair a portion Adam disinherited his whole posterity! — South
2.
To deprive of heritage; to dispossess.
And disinherit Chaos, that reigns here. — Milton