The idiom "passing fancy" means a temporary interest or attraction towards something or someone that is not likely to last for a long time. It refers to a sudden and short-lived infatuation or fascination with something that is not deep or lasting.
For example, if someone says, "I thought I wanted to be a musician, but it was just a passing fancy," it means that they were interested in music for a short time, but it wasn't a serious or long-term interest.
You can use this idiom when you want to describe a temporary interest or attraction that is not likely to last. It is often used to describe a fleeting desire or fascination that is not deep or meaningful.
In short, a "passing fancy" is a temporary interest or attraction that is not likely to last for a long time.
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• The company's decision to invest in new technology was not a passing fancy; it had been thoroughly researched and planned.
• She thought she liked him, but it was just a passing fancy.
• My interest in playing guitar was just a passing fancy; I lost interest after a few weeks.
• Although she enjoyed painting, she knew it was just a passing fancy and did not pursue it as a career.
• His love for extreme sports was not just a passing fancy; he had been practicing them for years.
• The writer's passion for poetry was not a passing fancy, but a lifelong dedication to the art.