[probably a mistake for ↓اثِفٌ] Continuing, permanent, constant, firm, or established: (K, TA:) so in the Moheet. (TA.)
2.
Also, (K, and so in a copy of the S,) or ↓اثِفٌ, [agreeably with analogy, and therefore more probably the correct form,] (so in other copies of the S and in the T,) Following. (Ks, T, S, K.)