The word "cocoon" is a complete word in itself, and doesn't typically take prefixes.
It's possible you're thinking of a related word, like "cocoa" or "coconut", which might have prefixes like "pre-" or "de-".
The word "cocoon" is a complete word in itself, and doesn't typically take prefixes.
It's possible you're thinking of a related word, like "cocoa" or "coconut", which might have prefixes like "pre-" or "de-".