Laborious

Laborious

Adjective · /ləˈbɔː.ri.əs/

Definition

Requiring considerable effort, time, and perseverance; tediously slow and painstaking; (of a person) hardworking; diligent.

Origin

From Old French laborieux, from Latin laboriosus (toilsome, troublesome), from labor (toil, work). Used in English from the late 14th century. The pejorative sense — tediously slow — has largely displaced the positive sense of hardworking in modern usage.