| hysteria(noun, love, disorder, desire, thing) |
| idee fixe(expression, love, passion, desire, thing) |
| impellent(noun, desire, urge, instinct, whim) |
| impelling(noun, force, restraint, pressure, spring) |
| imperative(noun, concern, demand, need, essential) |
| incentive(noun, drive, passion, fancy, stick) |
| inclination(noun, desire, urge, need, wish) |
| indispensability(need, essential, requirement, prerequisite, essentiality) |
| inexorability(noun, obligation, requirement) |
| influence(noun, trouble, force, power, strength) |
| inspiration(noun, cause, desire, urge, instinct) |
| life |
| lust(noun, passion, desire, stick, urge) |
| mandate(noun, obligation, requirement) |
| might(noun, trouble, control, understanding, power) |
| momentum(noun, trouble, power, strength, energy) |
| motivation(noun, desire, stick, urge, whip) |
| necessitation |
| onus(noun, understanding, right, weakness, burden) |
| pinch(concern, demand, need, essential, disaster) |