Benefactive case

The benefactive case (abbreviatedben, or sometimes b when it is a core argument) is a grammatical case typically used where English would use "for", "for the benefit of", or "intended for." For instance, "She opened the door for Tom" or "This book is for Bob" would both be examples of benefactive case (although generally unmarked in English).

The benefactive case expresses that the referent of the noun it marks receives the benefit of the situation expressed by the clause. This meaning is often incorporated through dative case. In Latin, this type of dative is called the dativus commodi.