We don't have synonyms for prorogues yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are prologue, prorogue and prologues.
(v) :
(transitive) To suspend (a parliamentary session) or to discontinue the meetings of (an assembly, parliament etc.) without formally ending the session.
(v) :
(transitive) To suspend (a parliamentary session) or to discontinue the meetings of (an assembly, parliament etc.) without formally ending the session.