Definition of “fly-by-night” - English Dictionary

british dictionary

“fly-by-night” in British English

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(Definition of “fly-by-night” from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

“fly-by-night” in American English

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fly-by-nightadjective [ not gradable ]

us /ˈflɑɪ·bɑɪˌnɑɪt/ disapproving

(esp. of a business) not able to be trusted, and likely to stop operating without any notice:

a fly-by-night operation

(Definition of “fly-by-night” from the Cambridge Academic Content Dictionary © Cambridge University Press)

“fly-by-night” in Business English

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fly-by-nightadjective [ before noun ]

uk us informal

a fly-by-night business or worker does not offer good products or services and is likely to avoid paying debts or satisfying agreements by leaving the area:

(Definition of “fly-by-night” from the Cambridge Business English Dictionary © Cambridge University Press)