We don't have synonyms for senhors yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are sensors, seniors and senhor.
(n) :
Obsolete spelling of señor. [A Spanish term of address equivalent to sir or Mr., used alone or capitalized and prefixed to the name of a married or an older man.]
(n) :
Obsolete spelling of señor. [A Spanish term of address equivalent to sir or Mr., used alone or capitalized and prefixed to the name of a married or an older man.]