* Position: forefront, foreground, forecastle
* Time: forewarn, foresee, foretell
* Importance: foremost, forerunner, forefather
The specific meaning of "fore" will depend on the context of the compound word it's used in.
Do you have a specific situation in mind where you're looking for a compound word with "fore"? Perhaps you can provide more context, and I can help you find the best word to use.