Unfaked is from un- ('not') + faked, past participle of fake, of uncertain origin, perhaps from earlier feague or from German fegen ('to sweep, clean'); first attested as thieves' cant in the 18th–19th centuries. Important recorded forms include un- (Old English). Morphologically, the un- element marks negation, reversal, removal, or deprivation, while the base supplies the action, quality, or state being denied or undone. The wording preserves that uncertainty: the older history is best read as a cautious account rather than a fully settled chain. The modern sense is largely compositional, with the historical elements narrowing into a stable English lexical item. In current use it covers genuine; not falsified or pretended. The wider family includes related words such as fake.