Scam
来自Big Physics
1960s: of unknown origin.
wiktionary
US carnival slang. Possibly from scamp(“swindler, cheater”). Also possibly from skam.
The word "scam" became common use among the US "drug culture" in early 1980 after Operation ABSCAM, an FBI sting operation directed at public officials, became public.
etymonline
scam
1963, noun and verb, U.S. slang, a carnival term, of unknown origin. Perhaps related to 19c. British slang scamp "cheater, swindler" (see scamp (n.)).
