A fad is something that's popular for a short period of time, much like a trend. Finding synonyms for the term "the latest fad" can be helpful in spicing up your writing. For instance, popular phrases that convey the same meaning include "the newest craze," "the hottest trend," "the latest fashion," and "the in thing." Other phrasings that can be a good fit include "the buzz of the moment," "the flavor of the week,'' "the passing fancy," "the current obsession," and "the popular vogue." No matter which synonym you choose, each provides different connotations and has the potential to add interest to your writing.