- intestinal fortitude
- Synonyms and related words: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
Moby Thesaurus. Grady Ward. 1996.