(x, I. this paper we consider the initial boundary value problem for a nonlinear damping and a delay term of the form: |u_t|^lu_tt- u; u_tt+_1|u_t|^m-2u_t\\+_2|u_t(t-)|^m-2u_t(t-)=b|u|^p-2u, t)-; on, with initial conditions and D. boundary conditions. U. appropriate conditions; ., we prove that there are solutions with negative initial energy that blow- up finite time if. Blow-up of Result in a Nonlinear Wave Equation With Delay and Source Term. DNC 2026, 10 (4), 733-741. https://doi.org/10.5890/DNC.2021.12.012.