1825. Kent, Modern Flash Dict., s.v.
1859. Matsell, Vocabulum, or Rogue’s Lexicon, s.v.
1881. New York Slang Dict., s.v.
Fun, subs. (old).—1. A cheat; a trick.
1690. B. E., New Dict. of the Canting Crew, s.v.
2. (old).—The posteriors, or Western End (Marvell). Probably an abbreviation of fundament. For synonyms, see Blind Cheeks and Monocular Eye-glass.
1690. B. E., New Dict. of the Canting Crew. I’ll kick your fun, c., I’ll kick your arse.
1785. Grose, Vulg. Tongue, s.v.
Verb. (old).—1. To cheat; to trick. Also to put the fun on.
1690. B. E., New Dict. of the Canting Crew. What do you fun me? Do you think to Sharp or Trick me? Ibid. He put the fun upon the cull, c., he sharp’d the Fellow. Ibid. I funn’d him, c., I was too hard for him; I outwitted or rook’d him.