Use proofread for the last pass over a text to catch surface errors, not for broad rewriting, restructuring, or developing ideas.
Use proofread for the last pass over a text to catch surface errors, not for broad rewriting, restructuring, or developing ideas.
Proofreaded is wrong because the past tense and past participle are both proofread.
Back-formation from proofreader, built on proof in the printers' sense of a trial impression and read. Merriam-Webster records the verb from 1845.