Noun:
1: con an argument opposed to a proposal
2: yard bird, convict, jailbird, con, jail bird, yardbird, gaolbird, inmate a person serving a sentence in a jail or prison
3: hustle, confidence game, bunko game, bunko, flimflam, gyp, bunco game, sting, bunco, con game, con, confidence trick a swindle in which you cheat at gambling or persuade a person to buy worthless property
Verb:
1: con, short-change, swindle, bunco, hornswoggle, nobble, victimize, mulct, defraud, rook, gip, diddle, gyp, goldbrick, scam deprive of by deceit; "He swindled me out of my inheritance"; "She defrauded the customers who trusted her"; "the cashier gypped me when he gave me too little change"
2: con, memorise, memorize, learn commit to memory; learn by heart; "Have you memorized your lines for the play yet?"
Adverb:
1: in opposition, con on the negative side; "much was written pro and con"