Nonreplication refers to the failure to reproduce or replicate a result or finding in a scientific study or experiment. There are various synonyms that can be used to describe this phenomenon, including non-reproducibility, non-verification, non-confirmation, and non-duplication. These terms all convey the idea that the original result could not be reliably demonstrated in subsequent experiments, and suggest a lack of confidence in the initial findings. Nonreplication can occur for a variety of reasons, such as methodological differences, small sample sizes, or chance variation. It is an important issue in science, as replication is essential for ensuring the validity and reliability of scientific research.