the.com/con
A word that swindles you twice: once as a crook, once as your own argument's opposition.
means As a verb, to deceive someone for gain; as a noun, either a swindle, a convict, or a point against something.
from The trickster sense shortens confidence man, the smooth talker who earns your trust before earning your wallet; the debate sense clips Latin contra, against.
Confidence trickThe con is short for confidence, not convict.
Pros and consHere con means against, from Latin contra.
First con manTerm coined in 1840s New York newspapers.