tendersome

Example:Preparing for the exams was an arduous process for Samuel, who had to work tirelessly to understand the material.

Definition:Extremely difficult or tiring. A task that is very difficult to do.

Example:The laborious sorting of documents took the whole team several days to complete.

Definition:Requiring much effort and hard work. A process that takes a lot of effort.

Example:His job as a firefighter was highly demanding, requiring both mental and physical exertion.

Definition:Requiring a great deal of effort, time, or skill. An activity that requires a lot of effort and skill.