Formal term for a person who donates or contributes something, often used in official, religious, or ceremonial contexts.
The donor who made a large contribution to the shrine's reconstruction was honored.
The names of the contributors are engraved on the stone monument.
Compound of 献納 (donation, offering) + 者 (person). The exact historical derivation is uncertain, but the kanji are conventionally associated with the meaning of a person who makes an offering or contribution.