It's likely you're thinking of "reciprocal", which is an adjective that describes something that is mutual or given in return.
Here are some examples of how "reciprocal" is used:
* Reciprocal love: Love that is felt and returned by both parties.
* Reciprocal agreement: An agreement where both parties agree to do something for each other.
* Reciprocal rights: Rights that are enjoyed by both parties involved.
If you have any other questions about word origins or usage, feel free to ask!