What word is halfway between old and new?

This is a bit of a trick question! There's no single word that sits perfectly "halfway" between "old" and "new" in a literal sense.

Here's why:

* Meaning: "Old" and "new" describe opposite ends of a spectrum, like age or freshness. There's no inherent midpoint.

* Language: Words don't exist on a linear scale like numbers.

However, there are words that could capture the *concept* of being in between:

* Middle-aged: This applies to the age spectrum.

* Used: This implies something isn't brand new, but not necessarily old either.

* Vintage: This suggests something is old, but valuable for its age.

* Pre-owned: Similar to used, but sometimes implies better quality.

The best word to use would depend on the specific context you're thinking of.