A more thorough explanation:

DONATIO INOFFICIOSA

Donatio inofficiosa is a Latin term that means "inofficious gift." It refers to a gift that is so large that it reduces the amount of property that an heir is entitled to receive from the donor.

For example, if a father has three children and he gives one child a gift that is much larger than what the other two children receive, this could be considered a donatio inofficiosa. The gift is considered "inofficious" because it goes beyond what is reasonable and fair, and it diminishes the inheritance of the other children.

Another example would be if a wealthy person gives away most of their property to a friend or charity shortly before their death, leaving little or nothing for their heirs. This could also be considered a donatio inofficiosa because it deprives the heirs of their rightful share of the property.

Donatio inofficiosa is a legal concept that is designed to prevent people from unfairly depriving their heirs of their inheritance. It is based on the idea that people have a duty to provide for their family members, and that gifts that are too large can be harmful to the family's financial well-being. The examples illustrate how a gift can be considered inofficious if it is disproportionate to what other heirs receive or if it leaves the heirs with little or nothing.