Compounder

noun

1. A person who compounds (mixes ingredients, and tests the result)

   "a compounder of medicines"

2. One who attempts to bring persons or parties to terms of agreement, or to accomplish ends by compromises.
3. One who compounds a debt, obligation, or crime.
4. One at a university who pays extraordinary fees for the degree he is to take.
5. A Jacobite who favoured the restoration of James II, on condition of a general amnesty and of guarantees for the security of the civil and ecclesiastical constitution of the realm.