Synonym of ANCIENT.

**The reasoning** A **synonym** is a word that has the same or nearly the same meaning as another word. "Ancient" means something that existed a very long time ago, from the distant past — think ancient Rome, ancient civilizations, or ancient artifacts. Looking at our options, "Old" carries this same meaning of being from the past or having existed for a long time. While "ancient" is stronger (suggesting *very* old, often thousands of years), "old" is the closest match among the choices. They're both describing something that has been around for a considerable time. **Why the wrong options tempt you** **Modern, New, Young** are all **antonyms** (opposites) of "ancient," not synonyms. If you're rushing or misread "synonym" as "opposite," you might pick any of these. They describe things that are current, recent, or fresh — the exact reverse of ancient. **Quick takeaway** Ancient = extremely old; when hunting for synonyms, find the word that walks in the same direction, not the opposite path.