-ee

from the GNU version of the Collaborative International Dictionary of English.

• A suffix used, chiefly in law terms, in a passive signification, to indicate the direct or indirect object of an action, or the one to whom an act is done or on whom a right is conferred; as in assignee, donee, alienee, grantee, etc. It is correlative to -or, the agent or doer.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• suffix Used to form diminutives.
• suffix Added to verbs to form words meaning a person or thing that is the object of that verb (ie, to whom or to which an action is done).
• suffix Less commonly added to verbs to form words meaning a person or thing that is the subject of that verb (ie, who or that does an action), especially where a passive sense of the verb is implied.
• suffix law Used to form words meaning a person who is the other party to a contract involving a person described by the corresponding word ending in -or
• suffix medicine Used to form words meaning a person who has undergone a particular medical procedure
• suffix Irregularly added to nouns to mean a person somehow associated with the object denoted by the noun.