con in WordNet English dictionary

1. a swindle in which you cheat at gambling or persuade a person to buy worthless property
   bunco  bunco game  bunko  bunko game  con  confidence trick  confidence game  con game  gyp  hustle  sting  flimflam 
   
2. an argument opposed to a proposal
   con 
   
3. a person serving a sentence in a jail or prison
   convict  con  inmate  yard bird  yardbird 
   

1. 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"
   victimize  swindle  rook  goldbrick  nobble  diddle  bunco  defraud  scam  mulct  gyp  gip  hornswoggle  short-change  con 
   
2. commit to memory; learn by heart
   "Have you memorized your lines for the play yet?"
   memorize  memorise  con  learn 
   

1. in opposition to a proposition, opinion, etc.
   "much was written pro and con"
   con  con