1.not participating in a chemical reaction;
desired amounts of inactive chlorine
2.not progressing or increasing; or progressing slowly
3.not active or exerting influence
4.of e.g. volcanos; permanently inactive;
an extinct volcano
5.of e.g. volcanos; temporarily inactive;
a dormant volcano
6.lacking in energy or will;
Much benevolence of the passive order may be traced to a disinclination to inflict pain upon oneself- George Meredith
7.lacking activity; lying idle or unused;
an inactive mine
8.not engaged in full-time work;
inactive reserve
9.not active physically or mentally;
illness forced him to live an inactive life
10. not engaged in military action
11. not in physical motion;
the inertia of an object at rest
12. temporarily inactive