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1. marital disloyalty; adultery.
2. unfaithfulness; disloyalty.
3. a breach of trust or a disloyal act; transgression.
4. infidelity
5. having an affair
In today's world of cell phones, texting and emails there is no reason to be on a payphone other than to cover the tracks of your affair. When you suspect someone of cheating on a spouse you say "they are on the payphone".
by Jeff Frese December 19, 2008
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