CSIS is an acronym that stands for the Canadian Security Intelligence Service, which is a federal agency responsible for national security intelligence. Synonyms for CSIS include Canadian intelligence agency, national intelligence agency, federal intelligence agency, and Canadian spy agency.
Other synonymous phrases that can be used for CSIS include the intelligence arm of the government of Canada, Canadian security agency, government intelligence agency, and federal security and intelligence agency. It's important to note that the agency is responsible for collecting, analyzing, and disseminating intelligence-related information, which helps in protecting the country's security and stability. CSIS is without a doubt a key player in ensuring national security in Canada and should be recognized as such.