What is the meaning of flat out?

adverb

  • In a blunt direct manner.
    • usage: "he spoke bluntly"; "he stated his opinion flat-out"; "he was criticized roundly"
  • At top speed.
    • usage: "he ran flat out to catch the bus"; "he was off down the road like blue murder"
WordNet 3.0 © 2006 by Princeton University
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APAWordNet. (2010). flat out. Retrieved September 20, 2026, from http://smartdefine.org/flat_out/definitions/1251552
ChicagoWordNet. 2010. "flat out" http://smartdefine.org/flat_out/definitions/1251552 (accessed September 20, 2026).
HarvardWordNet 2010, flat out, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/flat_out/definitions/1251552>.
MLAWordNet. "flat out" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/flat_out/definitions/1251552>