laborous
Laborous is an adjective used to describe something that requires a great deal of effort, exertion, or hard work. It signifies a task or activity that is difficult, time-consuming, and physically or mentally demanding. The term often implies a strenuous and arduous process.
For example, a task that involves a lot of physical strain, such as digging a large garden
The word "laborious" stems from the Latin word "labor," meaning "work" or "toil." It is often contrasted