1.Definition: having no hue
"Neutral colors like black or white"
2.Definition: having no net electric charge
3.Definition: having no personal preference
"A neutral observer"
4.Definition: having only a limited ability to react chemically; chemically inactive
5.Definition: lacking distinguishing quality or characteristics
"A neutral personality that made no impression whatever"
6.Definition: not supporting or favoring either side in a war, dispute, or contest
7.Definition: possessing no distinctive quality or characteristics