Prefixes come *before* the root word.
Here's why it's tricky:
* "After" can act as a prefix in words like "afterthought" or "afterglow." But in these cases, "after" is at the *beginning* of the word, making it a prefix.
* "After" can be part of a compound word like "afternoon" or "afterlife." Here, "after" isn't a prefix because it's combined with another word to create a new meaning.
Let me know if you want to play another word game!