| 单词 | fly-by-night | 
| 释义 | fly-by-night (flībī-nīt′) Informal   adj. 1.  Unreliable or unscrupulous, especially with regard to business dealings: "some fly-by-night startup that was halfway to shutting down" (Douglas Edwards). 2.  Of an impermanent or insubstantial nature: fly-by-night fashions in clothing. n. also  fly-by-night·er (-nītər) 1.  An unreliable or unscrupulous person. 2.  One, such as a company, that is short-lived and therefore unreliable.  | 
	
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