What is a “Riddim”? The slang term “Riddim” is a noun which was originated in the Caribbean’s and is used by Jamaicans and rappers in rap/hip-hop music to represent a rhythm or beat. Riddim is a Jamaican patois way of saying “rhythm”. The term “Riddim” has been used by AJ Tracey, Earl Sweatshirt, Stormzy, Frisco,