Middle English ribaud person of low status, scoundrel, lecher, from Anglo-French, from Old French riber to be debauched, of Germanic origin; akin to Old High German rīban to be in heat, copulate, literally, to rub
coarse, vulgar, gross, obscene, ribald mean offensive to good taste or morals. coarse implies roughness, rudeness, or crudeness of spirit, behavior, or language <found the coarse humor of coworkers offensive>. vulgar often implies boorishness or ill-breeding <a loud vulgar belch>. gross implies extreme coarseness and insensitiveness <gross eating habits>. obscene applies to anything strongly repulsive to the sense of decency and propriety especially in sexual matters <obscene language not allowed on the air>. ribald applies to what is amusingly or picturesquely vulgar or irreverent or mildly indecent <entertained the campers with ribald folk songs>.