Usually means: Unreliable, disappearing quickly or overnight.
Definitions Related words Mentions Lyrics
We found 28 dictionaries that define the word fly by night:

General (23 matching dictionaries)
  1. fly-by-night: Merriam-Webster
  2. fly-by-night: Oxford Learner's Dictionaries
  3. fly-by-night: American Heritage Dictionary of the English Language
  4. fly-by-night, fly-by-night: Collins English Dictionary
  5. fly-by-night: Vocabulary.com
  6. fly-by-night: Wordnik
  7. fly-by-night: Cambridge Advanced Learner's Dictionary
  8. fly-by-night: Wiktionary
  9. fly-by-night: Webster's New World College Dictionary, 4th Ed.
  10. fly-by-night: Infoplease Dictionary
  11. fly-by-night, fly by night: Dictionary.com
  12. fly-by-night: Online Etymology Dictionary
  13. fly-by-night: Cambridge Essential American English Dictionary
  14. Fly By Night (album), Fly-by-Night (Peyton novel), Fly-by-Night (film), Fly by Night (Hardinge novel), Fly by Night (Rush song), Fly by Night (TV play), Fly by Night (TV series), Fly by Night (album), Fly by Night (film), Fly by night: Wikipedia, the Free Encyclopedia
  15. fly-by-night: Rhymezone
  16. Fly-by-night: Dictionary of Phrase and Fable (1898)
  17. fly-by-night: FreeDictionary.org
  18. fly-by-night: Mnemonic Dictionary
  19. Fly by night: The Word Detective
  20. fly-by-night: TheFreeDictionary.com
  21. fly by night: Longman Dictionary of Contemporary English

Business (3 matching dictionaries)
  1. MoneyGlossary.com (No longer online)
  2. Travel Industry Dictionary (No longer online)
  3. fly-by-night: Legal dictionary

Miscellaneous (1 matching dictionary)
  1. fly-by-night: Idioms

Slang (1 matching dictionary)
  1. fly by night: Urban Dictionary

Definitions from Wikipedia (Fly by Night)

noun:  the second studio album by the Canadian rock band Rush, released on February 14, 1975, by Mercury Records.
noun:  a children's or young adults' fantasy novel by Frances Hardinge, published on 7 October 2005 by Macmillan in the UK and on 25 April 2006 by HarperCollins in the US.
noun:  "Fly by Night" is a song by Canadian rock band Rush.
noun:  a Canadian adventure series that aired for one season in 1991 as part of CBS' Crimetime After Primetime programming block in the United States.
noun:  "Fly by Night" is a song written by Ritchie Adams and Neval Nader and performed by Andy Williams.
noun:  Fly By Night is a 1962 Australian TV play broadcast on the ABC and filmed in London.
noun:  (Malay: Sebelum Pagi Berakhir) a 2018 Malaysian Mandarin-language neo-noir crime thriller film.
noun:  a stage musical written by Will Connolly, Michael Mitnick, and Kim Rosenstock, and conceived by Kim Rosenstock.




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