Possible Misspellings:
* Hunter: A person who hunts animals.
* Founter: A person who is the source of something.
* Funder: A person or organization that provides financial support.
Slang Possibilities:
Without more context, it's impossible to determine if "funter" is a slang term. If you heard it in conversation, try asking the person who used it what they meant.
Please provide more context or information if you want a more accurate answer.