Neutral

1. Not engaged on either side; not taking part with or assisting either of two or more contending parties; neuter; indifferent.
2. A person or a nation that takes no part in a contest between others; one who is neutral.
3. Neither good nor bad; of medium quality; middling; not decided or pronounced.
4. Having neither acid nor basic properties; unable to turn red litmus blue or blue litmus red; -- said of certain salts or other compounds. Contrasted with acid, and alkaline.
5. Neuter. See Neuter, a., 3.