Fad – An intense and widely shared enthusiasm for something; especially one that is short-lived; a craze

To remember the definition of the word fad, use the following mnemonic:

It was fab at first, but when dad (fad) joined in with the craze, we quickly lost interested.

Examples of fad in a sentence

Everyone thought it was a fad, but 50 years later she was still collecting stamps.

I don't like it when you call my interests a fad.

Hopefully this obsession with the trombone is just a fad.