Punctilious is an 11-letter word that means paying attention to detail. It is derived from the Latin word punctilio, which means 'minute detail'. Punctiliousness is the quality of being meticulous and exacting in one's work. It is often associated with a high level of accuracy and precision, as well as a commitment to excellence. PUNCTILIOUS people are known for their attention to detail and their ability to spot even the smallest errors. They are also known for their dedication to their work and their willingness to go the extra mile to ensure that everything is done correctly.