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intestinal fortitude

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noun
  1. courage; resoluteness; endurance; guts: to have intestinal fortitude.
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Origin of intestinal fortitude

First recorded in 1940–45
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for intestinal fortitude

backbone, chutzpah, courage, endurance, energy, fitness, fortitude, guts, heart, moxie, spunk, stamina, strength, vigor, wind, toughness, balls