refunder1
/(ˌ)riːˈfʌndə/ /rɪˈfʌndə/ /ˈriːfʌndə/noun
A person who or thing which repays or returns something; (now chiefly) a person who or thing which gives a refund.
Origin
Late 17th century; earliest use found in Thomas Brown (bap. 1663, d. 1704), writer. From refund + -er.
refunder2
/(ˌ)riːˈfʌndə/ /rɪˈfʌndə/noun
A person who or thing which refunds.
Origin
Late 19th century; earliest use found in The Columbus Dispatch. From refund + -er.