inactivePronunciation: /ɪnˈaktɪv/Translate inactive | into French | into German | into Italian | into Spanish Definition of inactive adjective not engaging in or involving any or much physical activity:an inactive lifestyle not working; inoperative:the device remains inactive while the computer is started up not engaging in political or other activity:an inactive Russian spy having no chemical or biological effect:the inactive X chromosome (of a disease) not exhibiting symptoms: inactive Crohn’s diseaseDerivatives inactively adverb inactive in other Oxford dictionaries Definition of inactive in the US English dictionary