Note: Not recorded as an adjective before 1879. The supposed use by the British general Richard Howe in a dispatch from Boston to the Secretary of State dated December 3, 1775 ("So many artifices have been practiced upon Strangers under the appearance of Friendship, fake Pilots &c."; Report Concerning Canadian Archives for the Year 1904, Ottawa, 1905, p. 355) is most likely a misreading (perhaps for faux or false?).

Note: The verb fake perhaps first appears in print, in the form faik, in 1810. In James Hardy Vaux's "A New and Comprehensive Vocabulary of the Flash Language" (vol. 2 of Hardy's Memoirs, London, 1819), it receives a very general definition: "a word so variously used, that I can only illustrate it by a few examples. To fake any person or place, may signify to rob them; to fake a person, may also imply to shoot, wound, or cut; to fake a man out and out, is to kill him; a man who inflicts wounds upon, or otherwise disfigures, himself, for any sinister purpose, is said to have faked himself … to fake a screeve, is to write a letter, or other paper; to fake a screw, is to shape out a skeleton or false key, for the purpose of screwing a particular place; to fake a cly, is to pick a pocket; etc., etc., etc." (p. 170). However, Hardy also records bit-faking "coining base money" and both Vaux and the earlier Lexicon Balatronicum (London, 1811, a revision of Francis Grose's Dictionary of the Vulgar Tongue, 1785) record fakement in the sense "forgery." so the sense "to simulate, counterfeit" was perhaps part of its original meaning. Much earlier is the agent noun faker, defined as "maker" in a list of "Canting Terms used by Beggars, Vagabonds, Cheaters, Cripples and Bedlams." in Randle Holme's The Academy of Armory (Chester, 1688) (a book about heraldry that includes a miscellany of information having nothing to do with heraldry). Along with faker Holme lists Ben-Fakers, "Counterfeiters of Passes and Seals" (ben is defined as "good"). This expression occurs earlier as ben-feaker in Thomas Dekker's pamphlet on cant, O per se O. Or A new cryer of Lanthorne and candle-light (London, 1612): "Of Ben-feakers of Jybes …They who are Counterfeiters of Passeports, are called Ben-feakers , that is to say, Good-Makers." (It is possible that Holme simply copied his entries from Dekker.) The noun feaker/faker implies a corresponding verb feak/fake "make," for which there appears to be no certain evidence. There is feague, fegue "to beat, whip" (earliest in the compound bumfeage) and "to wear out, bring about the ruin of," which are colloquial—the second sense is only attested in Restoration drama—but not argot, and which have a voiced velar consonant (aside from a single occurrence of a participle feakt). A suggestion dating back to Nathan Bailey's An Universal Etymological English Dictionary (4th edition, 1728) is that this word is borrowed from Dutch vegen "to sweep"; compare also German fegen "to wipe, clean, sweep." For further discussion see Anatoly Liberman, "A fake etymology of the word fake," OUPblog, August 23, 2017.