What is the term for an individual who commits waste on property and forfeits their estate according to Ohio laws?

The term for an individual who commits waste on property and forfeits their estate according to Ohio laws is indeed a life tenant. In property law, a life tenant is someone who holds an estate for the duration of their life, and they are responsible for the maintenance and preservation of that property. When a life tenant commits waste, which refers to any action that diminishes the value or condition of the property—such as neglecting to make necessary repairs or intentionally damaging the property—they can be held liable for that waste.

The consequence of committing waste can lead to the forfeiture of their estate, meaning they could lose their rights to continue occupying or using the property as stipulated in the original conveyance. This reflects the principle that life tenants have an obligation to preserve the property for the benefit of future interest holders, such as remaindermen or reversioners.