The modern definition of Adultery sex with someone other than your spouse where you lie to and say you didn't have sex with them.
But if you do have sex with someone else and let your spouse know about it or what people call swinging ,it's not adultery.
He fucked her but it's not adultery because his wife knows about it.
by Judge dredd7 April 07, 2011
A married person sleeping with somebody other then their SO, whether or not the other partner knows about it.
Sleeping with a married couple is adultery on the part of all three people.
by Loki April 10, 2002
The ultimate act of betrayal and dishonesty against your spouse by sleeping with someone else or as they say "parking your car in another woman's garage."

As wrong as adultery is, its primary cause is one of the married partners not reciving something they need emoptionally or physically from their spouse.
Adultery is wrong, wrong, wrong with a capital-W!
by krock1dk March 16, 2008
voluntary sexual intercourse between a married person and someone other than his or her lawful spouse.
Mahfouz Al-Khouri committed adultery after he beat his wife and brought a Syrian prostitute to live with him.
by Zana Shaheen January 17, 2011
chat rooms are known for harboring married people looking
for sex on the side. Generally, the single babe or guy has no problems with fucking a married person since if they are in chat rooms - both are losers.
Hi: my name is marshall
Hi: my name is robin
hi robin, can I come over and ass fuck you.
sure you can - I love married cock and adultery is just temporary love.
by smarty pants1130 March 15, 2006
Having multiple ammounts of hot steamy hardcore sex with the sexy ass neighbor accross the street while your spouse is at work.
Adultery: John was Ramming his neighbor so hard the mail man notified the cops due too the sound.
by Alexdubss February 02, 2012
the way to hint at a need for more sexual excitement in a serious relationship
by Anonymous February 24, 2003

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