| indubitableness(noun, store, trust, confidence, assurance) |
| inevitability(noun, store, trust, confidence, assurance) |
| intent(noun, spirit, determination, firmness, decision) |
| intention(noun, spirit, determination, firmness, decision) |
| intestinal fortitude(noun, expression, resolve, determination, firmness) |
| intransigence(noun, resolve, determination, firmness, persistence) |
| intrepidness |
| invincibility |
| inviolability(noun, support, honor, tie, honesty) |
| lock(noun, store, trust, confidence, assurance) |
| lockup(noun, store, trust, confidence, assurance) |
| obduracy(noun, resolve, determination, resolution, firmness) |
| obedience(noun, support, honor, tie, honesty) |
| open and shut case(noun, expression, idiom, store, trust) |
| patriotism(noun, support, honor, tie, honesty) |
| permanence(noun, perseverance, reliability, faithfulness, steadiness) |
| positive assurance(noun, expression, store, trust, confidence) |
| positiveness(noun, store, trust, confidence, assurance) |
| positivism(noun, store, trust, confidence, assurance) |
| predictability |