فسد

3 فاسدهُ ذ He became at variance with him; he cut, severed, or broke, the tie of friendship [or kindred ] with him. (L in art. كشح.) And فُلَانٌ يُفَاسِدُ رَهْطَهُ [ Such a one cuts the ties of friendship, or kindred, with his people, tribe, or near kinsfolk ]. (A.)