The term 'worshipper in dreadlocks, informally' can be summarized as a Rasta, which is a five-letter word. A Rasta is a follower of the Rastafari movement, an Abrahamic religion that originated in Jamaica in the 1930s. Rastas are known for their distinctive dreadlocks hairstyle and their use of cannabis as a sacrament. They are also known for their spiritual beliefs, which include the worship of Haile Selassie I, the former Emperor of Ethiopia.