| essence(need, essential, requirement, prerequisite, essentiality) |
| essential(concern, demand, need, requirement, prerequisite) |
| essentiality(need, essential, requirement, prerequisite) |
| exactment |
| excise(charge, fee, tax) |
| exigency(noun, concern, demand, need, essential) |
| extortionate demand |
| fiat(noun, order, charge, rule, demand) |
| freighting |
| full head of steam(noun, expression, idiom, trouble, power) |
| fundamental(concern, demand, need, essential, requirement) |
| fury(noun, trouble, power, strength, energy) |
| godsend(need, essential, requirement, prerequisite, essentiality) |
| heavy demand |
| horsepower(noun, trouble, power, strength, energy) |
| impact(noun, trouble, power, strength, energy) |
| imperative(noun, order, charge, concern, rule) |
| impetration(noun, order, interest, use, call) |
| impetus(noun, trouble, power, strength, energy) |
| imploration(noun, order, interest, use, call) |