When one person has a significant other and performs any type of intimate acts with another person.
I caught my boyfriend cheating on me with another girl.
by Erin August 14, 2003
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To date, have sex with, or kiss/make out with someone someone else while you are in a relationship. These people who cheat are disrespectful, selfish, fuckboys/sluts, and pretentious.
If you are married, this is sometimes called adultery
E.g. 1) Mike: Hey Dave, hows it going with your girlfriend?

Dave: Broke up with her, she was cheating. There's 5 months i'll never get back.

E.g. 2)Brittany: Ugh, Sally, my boyfriend was cheating on me. We were together for over a freaking year! How could he?
by a fallen star xxx April 17, 2019
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He is a character in the Flash Animation world of homestarrunner.com.

He is a furry yellow creature whose species is basically unknown. And he has his own language that features squeaks and "Meh"s. But he is 1'2" with yellow fur, black spots, and is shaped like a cheese and an anvil.

His best friend is Strong Mad who is at least 6 feet tall with no neck who protects him from larger predators. And he is Strong Bad's lackey, assistant, and sidedick frequently appearing in Strong Bad e-mail. And of course, Strong Bad has kicked him several times before, and he loves to make Flash cartoons on his yellow IMac computer which he tries to win trophies for. But really all his cartoons just feature bad animations of voices of characters from homestarrunner.com and just feature The Cheat being really cool.

He also:
Moves to the beat
Has yellow feet
Gives Strong Bad a hand
Messes up Homestar's plan
Makes out with Marzipan
Looks like Pikachu
Is not the guy from 21 Jump Street

No question he is one of the most popular characters on the website, and some of the fans kind of think of The Cheat as kind of a cuddly teddy bear creature. (Myself not included)

THE END
"Meh!"
"Three trophies for The Cheat!"
"A parade for The Cheat!"
by Tom G. August 3, 2005
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Being cheated on is one of the worst feeling you can feel. because you loose the trust for the person who cheated on you.you cant even forgive them because your hurt so bad. you never want to get cheated on and the worst part is you dont exspect it,you either get cheated on emotionaly or physicaly by sexual contact. you think you can trust the person with everthing and once you get cheated on everything changes, you cant seem to feel anything, you feel like giving up on life because you loved that person enough were you could go out with the person. you dont know who to trust becuase you dont want it to happen again. you feel like your world crashs to a end you will never act the same. you start slowly finding yourself constanyl thinking about saying what went wrong. you cant seem to stop crying becuase you have no heart anymore. and if you had to chance to change the pass you would and forget this ever happened.
going out with some and your lover does things with other people behind your back which makes it cheating.
by KrAzyk0r3y1 May 2, 2009
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Sending nudes to people other than your partner
woah did you hear johny was cheating on victoria by sending nudes to amanda
by chickennuggeys December 15, 2019
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I had to look up the word 'cheat' in the dictionary because I didn't know what it meant.
by Aussie 8 January 20, 2013
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In a relationship defined in power relations of dependence or obligation of 2 or more people where one or more people cheat on the other member/s of the set by performing sexual acts or committing effort unbeknownst, with members outside the set. The innocent parties are hence "cheated on". The guilty ones are then classified as "bastards" or "whores" in social contexts.
Of all the things to do, to have come all the way here just to get cheated on? Honestly. I hope they get a straight path to herpes hell.
by norestforthewicked June 8, 2005
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