تدامجوا

(tropical:) They agreed together: (A:) [they conspired together:] they leagued together, (A,) and aided one another. (S, A, K. *) You say, تدامجوا عَلَيْهِ (tropical:) They aided one another, (S,) or leagued together, and aided one another, (A, TA,) against him. (S, A, TA.)