Definitions of fly-by-night:
- noun: a debtor who flees to avoid paying
- adjective: of an impermanent nature
Example: "The symphony is no fly-by-night venture"
- adjective: of businesses and businessmen
Example: "A fly-by-night operation"
Search for fly-by-night at other dictionaries: OneLook, Answers.com, Merriam-Webster
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