intestinal fortitude

47 Moby Thesaurus words for "intestinal fortitude":
      backbone, bottom, chutzpah, decisiveness, endurance, energy, force,
      fortitude, grit, guts, gutsiness, guttiness, hardiness, heart,
      heart of oak, heartiness, lustihood, lustiness, mettle, might,
      mightiness, moxie, nerve, obstinacy, pith, pluck, potency, power,
      powerfulness, robustness, ruggedness, sand, spirit, spunk,
      stalwartness, stamina, staying power, sticking power, stout heart,
      stoutness, strength, strength of will, sturdiness, toughness,
      vigor, vigorousness, vitality