Reverse Dictionary: NEUTRAL

ADJECTIVES
1556 ► NEUTERLIKE neutral 
1635 ► ADIAPHOROUS neutral, indifferent, immaterial; neither right nor wrong morally 
1862 ► HALF AND BETWEEN neutral, neither one thing nor the other → Sc.

NOUNS
1612 ► ADIAPHORACY → ADIAPHORICIE neutrality, indifference → rare
1658 ► ADIAPHORY neutrality, indifference; religious indifference → rare
1723 ► PARLEY a state of neutrality, a period of truce; the call for such a truce or pause in a game → Sc.

NOUNS, PERSON
1556 ► NEUTER a person who holds himself neutral; one who takes neither side in a dispute or controversy, or favours neither of two opposed views 
1562 ► JACK OF BOTH SIDES a person who sides first with one party and then with the other 
1594 ► JACK-ON-BOTH-SIDES a neutral → sl.
1600 ► LIE-BY a neutral; one who stands aside → obs. exc. Sc.
L19 ► HALF-AND-HALFER a person or object that cannot easily be categorized, neither one thing nor another → sl.

VERBS
1562 ► HOLD WITH THE HARE AND RUN WITH THE HOUNDS to try to keep in with both sides; to play a double part 
1562 ► RUN WITH HARE AND HOUNDS to try to keep in with both sides; to play a double part 
1562 ► RUN WITH THE HARE AND HUNT WITH THE HOUNDS to try to keep in with both sides; to play a double part 
17C ► CARRY ONE’S CUP EVEN BETWEEN TWO PARTIES to favour neither of them → colloq.
1609 ► NEUTRIZE to stay neutral → obs. rare
1829 ► BE ON THE FENCE to be neutral 
1837 ► NEGATIVE to render ineffective, to neutralize