illywhacker
noun a confidence trickster. Agent noun from the obsolete phrase 'whack the illy' (to swindle; to perform confidence tricks). 'Illy' may possibly be a variant of obsolete 'eelie' (a confidence trick) which in turn is possibly from 'eeler-spee', a Pig Latin variant of
SPIELER. This word was all but dead prior to gaining new life due to Peter Carey's 1985 novel
Illywhacker AUSTRALIA, 1941