Senores is a Spanish word that translates to "gentlemen" or "sirs" in English. However, there are several synonyms that can be used in different contexts to convey a similar meaning. For example, "caballeros" can be used to address gentlemen in a more formal or traditional way, while "hombres" or "varones" can be used to refer to men in a more general sense. "Señoritas" or "damas" can be used to address women in a polite way. Additionally, the word "buenos" can be added before "días" or "tardes" as a shorthand way to address multiple people politely. Ultimately, the choice of synonym will depend on the situation and level of formality required.