The calculation procedure is available in the literature and briefly discussed in the supplementary material (Appendix A3). Fig. shows the temperature dependent average number of H-bonds per acetamide molecule, 〈𝑛 𝐻𝐵 〉, in these three DESs. The same for the neat molten acetamide at 358 K is also shown for a qualitative comparison. Clearly, 〈𝑛 𝐻𝐵 〉 is substantially lower in these ionic DESs than that in the neat molten acetamide and exhibits an appreciable anion identity dependence. The mild temperature dependence of 〈𝑛 𝐻𝐵 〉 reflected here can be explained in terms of the relatively weaker temperature-induced randomization of the dipolar correlations. The same trend followed by the anion dependent 𝜀 𝑠 , 𝐺 𝑘 and 〈𝑛 𝐻𝐵 〉 only highlights the fact that the dielectric decrement in the DESs is caused largely, if not solely, by the anion-induced damage of the intermolecular H-bond network among the host acetamide molecules, followed by the subsequent frustrations in the static dipolar correlations.