| 1. | not reliable or responsible, esp. in business; untrustworthy: a fly-by-night operation. |
| 2. | not lasting; brief; impermanent; transitory: a fly-by-night theater. |
| 3. | a person or thing that is unreliable, esp. a debtor who evades or attempts to evade creditors. |
| 4. | a person regarded as a poor credit risk. |

| fly-by-night (flī'bī-nīt') adj.
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Shady or untrustworthy: “Before buying stock in a newly formed company, the prudent investor will check its owners' credentials to make sure it's not a fly-by-night operation.”
fly-by-night
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