While it might seem like the prefix is "fur," it's actually "fur-" because the "t" is part of the root word.
Here's why this matters:
* "Fur-" is a prefix meaning "thief" or "secret."
* "tive" is a common suffix in English, often indicating an adjective or noun related to the root word.
So, the word "furtive" literally means "related to a thief" or "having to do with secrecy."