remitter

remit +‎ -er (agent noun suffix), or in the legal sense +‎ -er (action noun suffix)

• IPA^(key): /ɹɪˈmɪtə(ɹ)/

remitter (plural remitters)

1. One who remits, or makes remittance.
2. One who pardons.
3. (law) The sending or placing back of a person to a title or right formerly held; the restitution of one who obtains possession of property under a defective title, to his rights under some valid title by virtue of which he might legally have entered into possession only by suit[1]

• remitter in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913

• trimeter, trimetre