something that people are interested in for only a short period of time synonym craze the latest/current fad a fad for physical fitness Rap music proved to be more than just a passing fad. See related entries: The fashion world, Showing interest Word Origin mid 19th cent. (originally dialect): probably the second element of fidfad, contraction of fiddle-faddle. Compare with faddy.Extra examples the fad for cookery programmes the fad for cosmetic surgery Fads for vitamin supplements have been overtaken by a vogue for minerals and trace elements. It’s just a fad. It won’t last. Rap music proved to be more than just a passing fad. These fads come and go.