"fool, clown," 1540s, perhaps from Italian pazzo "fool," a word of unknown origin. Possibly from Old High German barzjan "to rave" [Klein]. But Buck says pazzo is originally euphemistic, and from Latin patiens "suffering," in medical use, "the patient." The form perhaps was influenced by folk etymology derivation from patch (n.1), on notion of a fool's patched garb.
"fool, simpleton," 1855, of unknown origin, apparently from the surname and perhaps influenced by slang mug "dupe, fool" (1851; see mug (n.2)). It also was the name of simple card game (1855) and the word each player tried to call out before the other in the game when two cards matched. The name turns up frequently in humor magazines, "comic almanacks," etc. in 1840s and 1850s.
"buffoon, fool, stupid person," 1550s, from Old French mome "a mask. Related" Momish. The adjective introduced by "Lewis Carroll" is an unrelated nonsense word.
"fool, stupid man," mid-15c., jobard, probably from French jobard (but this is not attested before 16c.), from jobe "silly." Earlier jobet (c. 1300).
"fool," 1936, abbreviation of Berkshire Hunt (or Berkeley Hunt), rhyming slang for cunt but typically applied only to contemptible persons, not to the body part.
This is not an objective, anatomical term, neither does it imply coitus. It connects with that extension of meaning of the unprintable, a fool, or a person whom one does not like. ["Dictionary of Rhyming Slang," 1960]