onerous

The word "onerous" describes a task, duty, or responsibility that is particularly burdensome, difficult, and often unpleasant. It goes beyond simply being "hard"—an onerous obligation feels heavy, oppressive, and potentially unfair. The origin of the word comes from the Latin onerosus, meaning "laden," which suggests something weighed down with a heavy load.

Historically, the term was often used in legal contexts to describe obligations that placed a serious burden on one party. Today, while it is still common in legal writing, it is also used more broadly to describe anything that feels excessively demanding or draining.

For example: "The new regulations placed an onerous burden on small businesses." Or, "Cleaning out the attic proved to be a truly onerous task." You might say a job offer comes with "onerous responsibilities" if it requires long hours and significant stress. It's not just about physical difficulty; it can also refer to mental or emotional strain.

Unlike simply saying something is "difficult," onerous suggests that the challenge isn't merely tough, but feels disproportionately heavy—a weight you didn't necessarily ask for, and one that requires significant effort to bear. So if something feels like a real drag and involves more than just a little hard work, chances are it is onerous.