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UKfly-by-night
/flˈaɪbaɪnˈaɪt/
/flˈaɪbaɪnˈaɪt/
Examples
1. But you were kind of fly-by-night.
2. And that craft beer is just another fly-by-night fad.
3. These folks aren't some fly-by-night operation doing a cheap GoPro knockoff.
4. Bernie Madoff was an individual sort of fly-by-night operation.
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