| sky-high(adjective, big, usual, unreasonable, extreme) |
| excessive(adjective, extreme, high, unwarranted, steep) |
| exorbitant(adjective, unreasonable, extreme, high, extravagant) |
| extreme(adjective, unreasonable, high, extravagant, unwarranted) |
| stiff(adjective, big, usual, unreasonable, extreme) |
| unconscionable(adjective, big, usual, unreasonable, extreme) |
| unreasonable(adjective, extreme, high, extravagant, unwarranted) |
| inordinate(adjective, unreasonable, extreme, high, extravagant) |
| immoderate(adjective, unreasonable, extreme, high, extravagant) |
| steep(adjective, big, usual, unreasonable, extreme) |
| towering(adjective, unreasonable, extreme, high, extravagant) |
| undue(adjective, unreasonable, extreme, high, extravagant) |
| boundless(unreasonable, extreme, extravagant, excessive, unwarranted) |
| disproportionate(unreasonable, extreme, extravagant, excessive, unwarranted) |
| dissipated(unreasonable, extreme, extravagant, excessive, unwarranted) |
| enormous(adjective, unreasonable, extreme, extravagant, excessive) |
| exaggerated(unreasonable, extreme, extravagant, excessive, unwarranted) |
| extra(unreasonable, extreme, extravagant, excessive, unwarranted) |
| extravagant(adjective, unreasonable, extreme, excessive, unwarranted) |
| gargantuan |