not taking part or giving assistance in a dispute or war between others

a neutral nation during World War II.

not aligned with or supporting any side or position in a controversy

The arbitrator was absolutely neutral.

of or belonging to a neutral state or party

neutral territory.

of no particular kind, characteristics, etc.; indefinite

a neutral personality that made no impression whatever; a sex-neutral job title.

(of a color or shade)

gray; without hue; of zero chroma; achromatic.

matching well with many or most other colors or shades, as white or beige.

Botany, Zoology . neuter.

not causing or reflecting a change in something

It is believed that the new tax law will be revenue neutral.

Chemistry . exhibiting neither acid nor alkaline qualities

neutral salts.

Physics .

(of a particle) having no charge.

(of an atom, molecule, collection of particles, fluid, or solid) having no net charge; electroneutral; not electrified.

not magnetized.

Phonetics . (of a vowel) pronounced with the tongue relaxed in a central position, as the a in alive; reduced.

a person or a nation that remains neutral, as in a controversy or war.

a citizen of a neutral nation during a war.

Machinery, Automotive . the position or state of disengaged gears or other interconnecting parts

in neutral.

a neutral color.

adjective

biased , committal , partial , predisposed , prejudiced , bright , loud , strong

adjective

aloof , bystanding , calm , clinical , collected , cool , detached , disengaged , disinterested , dispassionate , easy , evenhanded , fair-minded , impersonal , inactive , indifferent , inert , middle-of-road , nonaligned , nonbelligerent , nonchalant , noncombatant , nonparticipating , nonpartisan , on sidelines , on the fence * , pacifistic , poker-faced * , relaxed , unaligned , unbiased , uncommitted , unconcerned , undecided , uninvolved , unprejudiced , abstract , achromatic , colorless , drab , expressionless , indeterminate , indistinct , indistinguishable , intermediate , toneless , undefined , vague , vanilla , impartial , neuter , bland , indistinctive , adiaphorous , epicene , gray