gentleman

a polite and well-mannered man, especially one who behaves in a way that is considered to be traditionally proper for men

caballero, hombre educado

Collocations a gentleman's agreement

• He is a true gentleman.

  Es un verdadero caballero.

used as a polite way of speaking to or about a man, especially in formal situations

señor, caballero

Collocations Good morning, gentleman.

• Gentleman, may I have your attention?

  Señor, ¿me presta atención por favor?