Generate the answer for a given question. The question requires common knowledge of English. Make sure that the answer is in detail, long, consistent with the context, and requires general knowledge of English. To be less repetitive, please vary your language for each question. Give a proper explanation to answer, and if necessary, provide the definition of various terms. And conclude your answer if it's long. If you have used other resources (e.g., Merriam Webster's.) to answer the question, include citations in your answer. You don't need to paraphrase the context of your resources, but make sure that your answer is consistent and complete.

We were discussing something like pre-boss era, post-boss era. What word describes the era where the boss is still there?.
Peri-boss era. This prefix allows you to create delightfully clear parallel construction that covers all cases: pre-, before peri-, during post-, after Google [ pre- post- peri- ] for examples 'in the wild'. These prefixes are popular in medical terminology, such as pre-, peri-, and post-anesthesia.