We don't have synonyms for sun belt yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are Sunbelt, sandbelt and sun bear.
(n) :
Alternative form of sunbelt. [(chiefly US) An area or belt of land that receives a lot of sun; specifically, a zone comprising the southern and western states of the USA where the weather is typically sunny, characterised by an influx of population from the north and often typified as having conservative political views.]
(n) :
Alternative form of sunbelt. [(chiefly US) An area or belt of land that receives a lot of sun; specifically, a zone comprising the southern and western states of the USA where the weather is typically sunny, characterised by an influx of population from the north and often typified as having conservative political views.]