| adjective | (chemistry) not participating in a chemical reaction; chemically inert “desired amounts of inactive chlorine” |
| adjective | (pathology) not progressing or increasing; or progressing slowly |
| adjective | (military) not involved in military operations |
| adjective | not exerting influence or change |
| adjective | (of e.g. volcanos) not erupting and not extinct “a dormant volcano” |
| adjective | lacking in energy or will; - George Meredith “Much benevolence of the passive order may be traced to a disinclination to inflict pain upon oneself” |
| adjective | lacking activity; lying idle or unused “an inactive mine” |
| adjective | not engaged in full-time work “inactive reserve” |
| adjective | not active physically or mentally “illness forced him to live an inactive life” |
| adjective | not in physical motion “the inertia of an object at rest” |
| inactivity | noun | the state of being inactive |
| dormancy | noun | a state of quiet (but possibly temporary) inaction |
| inactiveness | noun | the state of being inactive |
| passivity | noun | the trait of remaining inactive; a lack of initiative |
| passiveness | noun | the trait of remaining inactive; a lack of initiative |
| motionlessness | noun | a state of no motion or movement |
| stillness | noun | a state of no motion or movement |