Onerous

It's very onerous.

Taxation according to income is the most effective instrument yet devised to obtain just contribution from those best able to bear it and to avoid placing onerous burdens upon the mass of our people.

By the way, your instructions to me never to allow Sir Henry to go out alone will become very much more onerous if a love-affair were to be added to our other difficulties.

The Food and Drug Administration required an onerous approval process to bring any test to market.

The cost of repairing this damage will be onerous.

At issue is whether those rules, crafted by the Environmental Protection Agency, constitute a reasonable attempt to safeguard America’s freshwater supply or a massive bureaucratic power grab that will subject farmers and other landowners to onerous federal oversight and regulations.

That all this might not be too onerous on the purses of his rustic patrons, who are apt to consider the costs of schooling a grievous burden, and schoolmasters as mere drones, he had various ways of rendering himself both useful and agreeable.

Again, and more intensely than ever, she desired a fixed occupation,—no matter how onerous, how irksome.

[I]t has become an onerous duty, a wearisome and distasteful task.

The striker's job was onerous, too, because there was so little "give" in the metal, and the perpetual jarring was indeed trying to the muscles.