As a Noun: 1. The condition or state of being completely clean. English = spotlessness. 2. The condition or state of being completely clean, or not mixed with anything else and containing no harmful substances. English = purity. 3. The quality of being easy to understand, see or hear, or of being obvious and impossible to be mistaken about. English = clarity. 4. The ability to perform a task without making a mistake or to do something exactly as it should be done. English = accuracy, precision, exactness. 5. In a scientific context (mathematics, information, measurements, etc.), the condition of data, procedures, experiments, etc. being correct and exact in all details. English = accuracy. As a Verb or Adjective: 1. To be completely clean. English = (be) spotless. 2. To be completely clean, or to be not mixed with anything else and containing no harmful substances. English = (be) pure. 3. To be or to make something easy to understand, see or hear, or to be obvious and impossible to be mistaken about. English = (be) clear; clarify. 4. To be correct or proper in every way possible, especially with reference to the answer to a question or problem. English = (be) precise, (be) accurate, (be) exact. 5. In a scientific context (mathematics, information, measurements, etc.), used to describe data, procedures, experiments, etc. which are correct and exact in all details. English = (be) accurate.