Definition of inactive:
(chemistry) not participating in a chemical reaction; chemically inert; "desired amounts of inactive chlorine"
(pathology) not progressing or increasing; or progressing slowly
(military) not involved in military operations
not exerting influence or change
(of e.g. volcanos) not erupting and not extinct ; "a dormant volcano"
lacking in energy or will; "Much benevolence of the passive order may be traced to a disinclination to inflict pain upon oneself"- George Meredith
lacking activity; lying idle or unused; "an inactive mine"; "inactive accounts"; "inactive machinery"
not engaged in full-time work; "inactive reserve"; "an inactive member"
not active physically or mentally; "illness forced him to live an inactive life"; "dreamy and inactive by nature"
not in physical motion; "the inertia of an object at rest"