"Sedulous" is an adjective that comes from the Latin word sedulus, meaning "diligent" or "careful." It refers to someone who shows persistent, tireless effort and attention to detail in their work or actions. A sedulous person is dedicated, hardworking, and industrious, consistently putting in steady and focused effort to achieve a goal or complete a task. It emphasizes a thorough, conscientious approach to one's responsibilities or pursuits.

The term conveys not only hard work but also perseverance and a thoughtful, meticulous attitude toward tasks.