Irreproducibility is a word that is often used in scientific research to describe the inability to replicate results. However, there are several other synonyms that can be used to convey a similar concept. For instance, other words that can be used to describe irreproducibility include inconsistency, variability, uncertainty, and unreliability. Additionally, some other words that can be used in the context of scientific research include instability, unpredictability, and discreteness. All of these alternative words help to describe the same basic concept of variability and unpredictability that can make it difficult to replicate and validate scientific findings.