* History: This is the most direct opposite, referring to the period of time after the invention of writing, when events are recorded.
* Modern Era: This encompasses the time period after the Middle Ages, often considered to start in the 15th or 16th century.
* Modern History: This refers to the more recent past, typically starting from the late 18th or early 19th century.
* Recorded History: This emphasizes the written documentation that distinguishes history from prehistory.
The best antonym depends on what you're trying to convey. If you're looking for a general contrast, "history" is a good choice. If you're talking about a specific period, "modern era" or "modern history" might be more appropriate.