يَتَكَايَدَانِ
Root: كيد
Form: 6
Full Definition
يَتَكَايَدَانِVI
They two deceive, beguile, or circumvent, each other; or do so, each desiring to do to the other a foul, abominable, or evil, action clandestinely. See 1. You should not say يَتَكَاوَدَانِ.