The Sri Lankan rupee is the official currency of Sri Lanka. However, there are many synonyms for the word "Sri Lankan rupee." Some of the most common synonyms are "LKR," "Rs," and "SLR." Additionally, the Sri Lankan currency is often referred to simply as "rupees." Other synonyms include "Ceylonese rupee," "Sri Lanka rupee," and "rupee Sterling." It is important to note that while these terms may be used interchangeably, they all refer to the same currency. The Sri Lankan rupee has been in circulation since 1872 and is currently issued by the Central Bank of Sri Lanka.