The results presented here demonstrate the complex interplay between two distinct forms of host-framework disorder-cationic site-occupation disorder and lone-pair orientational disorder-and the structure and dynamics of the mobile ion species within a fluoride-ion-conducting solid electrolyte. The complex nature of these interacting effects suggests that the resulting effect on mobile-ion dynamics is likely to be highly dependent on the exact composition and structure of the solid electrolyte, and we expect further exploration of the coupling between crystallographic disorder, lone pair dynamics, and ionic conductivity in solid electrolytes to be a fertile area for future research.