The word "doublecross" is often used to describe an act of betrayal or treachery. However, there are many synonyms that can be used to convey a similar meaning, such as deception, trickery, betrayal, deceit, treachery, backstabbing, two-timing, duplicity, infidelity, and disloyalty. Each of these words carries a negative connotation, indicating that someone has acted in a dishonest or untrustworthy manner. It is important to choose the right synonym to convey the intended meaning and severity of the situation. Whatever word is chosen, the concept of betrayal is one that is universally understood and often evokes strong emotions.