名詞 con:

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

動詞 con:

1. deprive of by deceit
   同義詞：victimize, swindle, rook, goldbrick, nobble, diddle, bunco, defraud, scam, mulct, gyp, gip, hornswoggle, short-change
2. commit to memory; learn by heart
   同義詞：memorize, memorise, learn

副詞 con:

1. on the negative side
   同義詞：in opposition

1. The resolution was carried nem con.
   決議案獲一致通過。
2. She conned me out of ￡100.
   她騙走我100英鎊。

con

adv.（副詞）
In opposition or disagreement; against:
反向或不同意地；反對地：
例句：
debated the issue pro and con.
從正反兩方面討論這個問題

n.（名詞）
An argument or opinion against something.
反對論點：反對某物的論據(jù)或觀點
One that holds an opposing opinion or view.
反對者：持反對觀點或意見的人

來源：
Middle English
中古英語
short for contra
contra的簡寫
from Latin contr3 [against] * see contra-
源自 拉丁語 contr3 [反對] *參見 contra-

con
con 2

v.tr.（及物動詞）
conned,con.ning,cons
To study, peruse, or examine carefully.
精讀：研究、探究或仔細檢查
To learn or commit to memory.
學習或記住

來源：
Middle English connen [to know]
中古英語 connen [知道]
from Old English cunnan * see gnô-
源自 古英語 cunnan *參見 gnô-

【引伸】
con.ner
n.（名詞）

---------------另--------------
con
con 3或 conn

v.tr.（及物動詞）
conned,con.ning,cons 或 conns
To direct the steering or course of (a vessel).
掌舵：指揮（船的）航向或航線
n.（名詞）
The station or post of the person who steers a vessel.
操舵臺：指揮船舶的人站的位置和地點
The act or process of steering a vessel.
掌舵：掌舵的動作或過程

來源：
From cond
源自 cond
from Middle English conduen
源自 中古英語 conduen
from Old French conduire
源自 古法語 conduire
from Latin condôcere [to lead together] * see conduce
源自 拉丁語 condôcere [領到一起] *參見 conduce

con
con 4

v.tr.（及物動詞）
conned,con.ning,cons
To swindle (a victim) by first winning his or her confidence; dupe.
欺詐，欺騙：通過先贏得他或她的信任后再欺騙（受害者）；欺騙
n.（名詞）
A swindle.
詐欺
adj.（形容詞）
Of, relating to, or involving a swindle or a fraud:
欺詐的，騙局的：欺詐的或騙局的、與之有關的或涉及于此的：
例句：
a con artist; a con job.
詐騙高手；欺騙性工作

來源：
Short for confidence
confidence的簡寫

con
con 5

n.Slang （名詞）【俚語】
A convict.
囚犯