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a person who is married and has sex with other people
Nora is such a cheater she slept with all the people she worked with....Man her husband is gonna kill her
cheater by ihatecheaters February 16, 2008
one who decides to have another relationship with another girl and when his real girlfriend goes back to her country she finds out online, decides to hide his cowerly self until almost a month later. then proceeds to blame the whole thing on his (now, ex) girlfriend and tells her to stay away from his girlfriend aka the girl he cheated with.
A) GUY: I'm just gonna let her think I love her then continue my other relationship when she's gone

B) GIRL: F&%$ HIM . He was cheating on me!! I always knew he was a cheater deep down!
cheater by Joe Dane August 31, 2010
When a guy go's and dates other girls while she's at home thinking he's at work making a living
Sue: he's at work

Anna: no he was fired last week for having a one night stand with my boss.

Sue: THAT CHEATER!!
Cheater by The wanted August 30, 2013
Bill Belichick is an example of someone who is a cheater. That's why he's often called Bill Belicheat.
cheater by HarryPothead6009 February 7, 2008
Some cold, heartless, immature buttfuck that will hurt you more than getting sent to the hostipal by spend time with you and make you think your building a connection that nothing can break, by you giving all tour commitment,trust,loyalty,time,love,laughs,smiles,honesty, and world to just so at the end you can feel like nothing and a waste of time. To make you feel like you feel like your not important enough. So that person will last the waste the last couple years of you guys spent together mean nothing but a worthless peace of shit.
Women #1: Calls her man. And doesn't answer but leaves a message. "Hey baby, were are you? Do you remember about our plans."
Man #1: Is fucking some chick that he just met at the strip club. And theme goes home to his girl.

Women #1: "Where were you!?!"
Man #1: " I was at hostipal because my friend got in crash"
Man #1 phone rings but the caller felt a message.
Women #2: "Damn daddy, I had amazing time tonight with you. But baby, you felt your boxers here and your sock. Maybe u can pick them up and we can go for round two?"

Women #1: "Are you fucking kidding me? This is the third time!! I'm sick and tired to hear the words ' Babygirl, she just a friend.' Or ' Your only girl I'm talking to'. I'm leaving you cheater! Don't ever talk to me again asshole."
A person who acts dishonestly or practices fraud (cheating) such as obtaining the questions to a math test which are not intended to be had before taking the exam.
Christina Tran got the questions on the test and is a cheater.
cheater by Anonymous February 23, 2005