Herein, we have developed Tha??Mn nanoadsorbent for the removal of fluoride from aqueous systems. The adsorbent presented high surface area (156.864 m2 /g) and small pore size (13.3 ??) demonstrating the high porosity of the nanoadsorbent. The adsorbent surface morphology has been characterized by XRD, TEM, BET, and Raman techniques. The fluoride adsorption mechanism was confirmed by FTIR studies. The fluoride uptake conditions were optimized using batch studies. The batch results demonstrated maximum adsorption efficiency (85%) at pH 6 within 85 min. The adsorption isotherms were well fitted by the Freundlich isotherm model (R2 > 0.870). The nanoadsorbent presented excellent regeneratability (up to 95%) with an alkali solution. The property of regeneration and reusability makes it a smart sustainable material for fluoride removal