fad
craze / trend / fashion / obsession
Noun
pl: fads
This term carries a strong connotation of superficiality and transience. It describes a burst of popularity that is often driven by novelty or social contagion rather than enduring value or utility. Because of this, the word is frequently used with a critical or dismissive tone to suggest that the trend is foolish or unsubstantiated. In a social context, it distinguishes a fleeting craze from a long-term trend or a cultural shift. While a trend might evolve into a permanent part of a lifestyle, a fad is expected to vanish as quickly as it appeared, leaving behind a sense of obsolescence.