One of the mysteries of the English language finally explained.
A person who applauds; a person who praises or expresses approval.
Late 17th century; earliest use found in Jane Barker (bap. 1652, d. ?1727), poet and novelist. Either irregularly from plaudit + -or, or irregularly from classical Latin plaudere plaud ( plaudit- being erroneously taken as past participial stem) + -or; perhaps by association with auditor.
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