You use fad to refer to an activity or topic of interest that is very popular for a short time, but which people become bored with very quickly. Hamnett does not believe environmental concern is a passing fad. = craze. flavin adenine dinucleotide. something that people like or do for a short time, or that is fashionable for a short time (Perhaps from fiddle-faddle)
Short lived fashion are called fad’s; They seldom have any lasting Impact on future fashion They are briefly and suddenly seen everywhere and just as suddenly they vanish