senate — an assembly or council of citizens having the highest deliberative functions in a government, especially a legislative assembly of a state or nation.
Three-syllable rhymes
characters — the aggregate of features and traits that form the individual nature of some person or thing.
Four-or-more syllable rhymes
conspiracy — Conspiracy is the secret planning by a group of people to do something illegal.
conspirator — A conspirator is a person who joins a conspiracy.