What is the meaning of con?

noun

• An argument opposed to a proposal.
• A person serving a sentence in a jail or prison.
  • synonyms: convict, inmate, yard bird, yardbird
• A swindle in which you cheat at gambling or persuade a person to buy worthless property.
  • synonyms: bunco, bunco game, bunko, bunko game, confidence trick, confidence game, con game, gyp, hustle, sting, flimflam

verb

• Deprive of by deceit.
  • usage: "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"
  • synonyms: victimize, swindle, rook, goldbrick, nobble, diddle, bunco, defraud, scam, mulct, gyp, gip, hornswoggle, short-change
• Commit to memory; learn by heart.
  • usage: "Have you memorized your lines for the play yet"
  • synonyms: memorize, memorise, learn

adverb

• In opposition to a proposition, opinion, etc..
  • usage: "much was written pro and con"