Con一般是简写,可以有:con=consequence, 后果, 如 We need to analyze the pros and cons.con=convict 罪犯 cons in prison, He's an ex-con. (美剧越狱里,经常这么用con)con=Confidence trick, scam 相当于诈骗 They did a con on me. (英剧Hustle,讲几个骗子的故事,这么用con)con=Contact lens, in Hong Kong English, 香港人也称隐形眼镜为cons其实还有不少,不过这些比较常用。