unmoving, torpid, nonmoving, indifferent, inactive, neutral, unreactive, sluggish, inanimate, lifeless, more...

active, dynamic, lively, energetic, animated

noble, inactive, noble gas, noble metal, noble element, inert gas, inert element, inert metal, more...

immunologically, other, long, optically, mere, such, most, whole, various, osmotically, certain

no reaction,   not reacting,   unable to act,   lacking agency,   without reaction,   like a noble gas,   without action,   like krypton,   non reactive,   unable to react