rassclaat
/ˈrɑːsklɑːt/coarse slang (originally and chiefly Jamaican )
adjective
Despicable, contemptible.
noun
A despicable or contemptible person; frequently as a term of abuse.
Origin
1950s; earliest use found in Colin MacInnes (1914–1976), novelist and essayist. From rass + claat, Jamaican variant of cloth.