The particle-induced deexcitations of the 9.64 MeV, 3⁻₁ and 9.87 MeV, 2⁺₂ resonances of ¹²C increase the ¹²C production rate in a very hot and dense stellar environment. The enhancements in ¹²C production in such environments were estimated for a particle (n, p, and α) density of 10⁶ g/cm³ in the temperature range of T₉ = 0.1 to 10. Enhancement due to neutron-induced deexcitation was found to be the maximum. The net ¹²C production rate due to the combined contributions from 7.65 (Hoyle state), 9.64, and 9.87 MeV states is much higher compared to the rate adopted by NACRE compilation. In case of a typical collapsing massive star with temperature dependent densities, for any of the 3⁻₁ or 2⁺₂ resonances, the enhancement factor due to n, p, and α-induced deexcitations together can be as high as 600.