from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Unreliable or unscrupulous, especially with regard to business dealings: "fly-by-night telephone companies that open up shop, sell some systems, then disappear when service is needed” ( Mary Ellen Jordan).
- adj. Of an impermanent or insubstantial nature: fly-by-night fashions in clothing.
- n. An unscrupulous or undependable person, especially one who leaves secretly without paying creditors.
- n. Something of a shaky or impermanent nature.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A creature which flies at night; a nocturnal flier or traveler.
- n. One who departs or flees at night in order to avoid creditors, law enforcement etc. (often used attributively).
- n. A person or business that appears and disappears rapidly, or gives an impression of transience.
- n. A traveling businessman or tradesman.
from The Century Dictionary and Cyclopedia
- n. A jib set like a studding-sail; a squaresail set on some sloops when running before the wind.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a debtor who flees to avoid paying
- adj. (of businesses and businessmen) unscrupulous
- adj. ephemeral
Sorry, no etymologies found.