'SPRR' is not a word and has no synonyms. It is likely a typo or a mistaken abbreviation for a longer word such as 'super' or 'spray.' If 'SPRR' was meant to be an acronym, the possible meanings could vary depending on the context in which it is used. In the absence of any additional information, it is impossible to provide synonyms for this term. Without further information, it is best to seek clarification to determine the intended meaning.