We don't have synonyms for scraffito yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are graffito, sgraffito and sgraffiti.
(n) :
Alternative form of sgraffito. [(art, uncountable) A technique in ceramics, art and wall design, where the top layer of pigment or slip is scratched through to reveal an underlying layer.]
(n) :
Alternative form of sgraffito. [(art, uncountable) A technique in ceramics, art and wall design, where the top layer of pigment or slip is scratched through to reveal an underlying layer.]