inerticus Save DMLBS Du Cange inerticus [LL = insipid, tasteless] , slothful, lazy, inert. desiduus, ‥ plumbeus, silicernus, somnolentus, iners, ~us Osb. Glouc. Deriv. 180. INERTICUS, Gravis, ignarus, remissus. Jo. de Janua.