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Intestinal fortitude is defined as courage and endurance to go on.
Synonyms:
bottle [British slang], bravery, courage, courageousness, daring, daringness, dauntlessness, doughtiness, fearlessness, gallantry, greatheartedness, GUTS, gutsiness, hardihood, heart, heroism, intrepidity, intrepidness, moxie, nerve, stoutness, valor, virtue
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