Neutral is an adjective with multiple meanings:
1. Not supporting or helping either side in a conflict or disagreement
2. Having no strongly marked or positive characteristics
3. (Chemistry) Neither acid nor alkaline; having a pH of about 7
4. (Color) A color such as gray, beige, or cream that is not bright or strong
5. (Electrical) Neither positive nor negative
6. (Automotive) The position of a gear mechanism in which no power is transmitted