What is the word for the day after tomorrow?

The word for the day after tomorrow is "overmorrow." It is an archaic term that is rarely used in modern English. The word is derived from Middle English and Old English roots, with "over" meaning "beyond" or "past" and "morrow" meaning "morning" or "tomorrow."

While "overmorrow" was commonly used in the past, it fell out of favor in the English language over time, with most people now using phrases like "the day after tomorrow" instead. However, some people may still use "overmorrow" to add a unique flair or to sound more formal or poetic.