What does laborious mean?

"Laborious" means requiring a lot of effort, time, and energy. It often implies a task that is difficult, tiring, and maybe even unpleasant.

Here are some synonyms for laborious:

* Arduous

* Backbreaking

* Difficult

* Exhaustive

* Grueling

* Strenuous

* Toilsome

* Wearisome

Here are some examples of how "laborious" can be used:

* "The construction project was a laborious undertaking, requiring months of hard work."

* "She spent many laborious hours researching the history of her family."

* "The hike was laborious, with steep inclines and loose rocks."

In short, "laborious" describes something that is demanding and requires significant effort.