Define: permissive waste
A tenants failure to make norm repairs to property so as to protect t from substantial deterioration
Define: affirmative or voluntary waste
Any structural change made to an estate in land that intentionally or negligently causes harm to the estate or depletes its resources
Define: ameliorative waste
A lessees unauthorized change to the physical characteristic of a lessors property - technically constituting waste, but in fact resulting in improvement of the property.