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naff [naff 词源字典]: naff: [20] There seem to be two separate words naff in British slang, but the origins of both are mysterious. The first, naff off, appeared in the 1950s. Functionally it is a euphemistic substitute for fuck off, and there could be some connection with eff, another euphemism for fuck (perhaps the n in an eff wandered out of place). Alternatively it could come from naf, an old backslang reversal of fan in the sense ‘female genitals’.

The second, an adjective meaning ‘unstylish, unfashionable, tasteless’, is first recorded in 1969. Its antecedents are even more obscure. Among possible relatives are northern English dialect niffy-naffy ‘stupid’ and naffy, naffin and naffhead ‘idiot’ and Scots nyaff ‘unpleasant person’.
[naff etymology, naff origin, 英语词源]
news (n.): late 14c., "new things," plural of new (n.) "new thing," from new (adj.); after French nouvelles, used in Bible translations to render Medieval Latin nova (neuter plural) "news," literally "new things." Sometimes still regarded as plural, 17c.-19c. Meaning "tidings" is early 15c. Meaning "radio or television program presenting current events" is from 1923. Bad news "unpleasant person or situation" is from 1926. Expression no news, good news can be traced to 1640s. Expression news to me is from 1889.

The News in the Virginia city Newport News is said to derive from the name of one of its founders, William Newce.
ratbag (n.): also rat-bag, "unpleasant person," 1937, from rat (n.) + bag (n.).
wad (n.): early 15c., wadde, "small bunch of fibrous, soft material for padding or stuffing," of uncertain origin, perhaps from Medieval Latin wadda (14c., source also of French ouate, Italian ovate), or Dutch watten (source of German Watte), or Middle English wadmal (c. 1300) "coarse woolen cloth," which seems to be from Old Norse vaðmal "a woolen fabric of Scandinavia," probably from vað "cloth" + mal "measure."

The meaning "something bundled up tightly" (especially paper currency) is from 1778. To shoot (one's) wad "do all one can do" is recorded from 1914. The immediate source of the expression probably is the sense of "disk of cloth used to hold powder and shot in place in a gun." Wad in slang sense of "a load of semen" is attested from 1920s, and the expression now often is felt in this sense. As a suffix, -wad in 1980s joined -bag, -ball, -head in combinations meaning "disgusting or unpleasant person."
minger: "An unattractive or unpleasant person or thing", 1990s: from minging.