Painstaking (adjective)

1. Requiring or showing great care and effort; very thorough and meticulous.
2. Involving or characterized by much effort and trouble.

Origin:

From the word "pain" + "staking" (meaning "to take pain.s")

Examples:

1. It took her several weeks to complete the painstaking task of cataloging all the books in the library.
2. The detective's investigation was painstaking, as he left no stone unturned in his quest to solve the case.
3. The artist's work was characterized by its painstaking attention to detail.
4. The archaeologist's painstaking study of the ancient ruins ultimately led to a better understanding of the civilization that had built them.
5. He went through the process of learning to play the piano in a painstaking way.