leísmo
Leísmo is a linguistic phenomenon in Spanish in which the indirect object pronoun le is used as the direct object pronoun for masculine animate referents (typically people), instead of the standard lo (for masculine) or la (for feminine). When leísmo concerns people, it is usually called leísmo de persona. In many dialects, especially in parts of Spain (notably Castile) and some regions of Latin America, leísmo of a person is widely used and understood. The Real Academia española (RAE) recognizes leísmo de persona as a regional variant and records it as acceptable in many contexts, though it remains restricted to referents of people and to masculine gender.
Leísmo is often contrasted with laísmo and loísmo. Laísmo is the use of la as a direct
Examples illustrate the distinction. Standard: Lo vi a Juan ayer (I saw Juan yesterday). Leísmo de persona: