| inflexibility(noun, resolve, determination, firmness, persistence) |
| influence(noun, control, force, charge, power) |
| ingenuity(noun, strength, knowledge, ability, skill) |
| intellect(noun, understanding, mind, understand, sense) |
| intelligence(noun, understanding, power, turn, strength) |
| intestinal fortitude(noun, expression, power, strength, energy) |
| intransigence(noun, resolve, determination, firmness, persistence) |
| intrepidity(noun, strength, determination, courage, firmness) |
| judgment(noun, understanding, ability, mind, understand) |
| juice(noun, control, force, charge, power) |
| jump(noun, control, force, charge, power) |
| jurisdiction(noun, control, force, charge, power) |
| knack(noun, power, turn, strength, knowledge) |
| know-how(noun, understanding, strength, knowledge, ability) |
| knowledge(noun, advance, drive, power, ability) |
| leg up(noun, expression, control, force, charge) |
| license(noun, control, force, charge, power) |
| long suit |
| luminosity(noun, understanding, skill, understand, sense) |
| making the grade(expression, idiom, ability, skill, capacity) |