UNHELMET
Un*hel"met, v. t. Etym: [1 st pref. un- + helmet.]

Defn: To deprive of the helmet. Sir W. Scott.

UNHIDE
Un*hide", v. t. Etym: [1 st pref. un- + hide.]

Defn: To bring out from concealment; to discover. [Obs.] P. Fletcher.

UNHINGE
Un*hinge", v. t. Etym: [1 st pref. un- + hinge.]

1. To take from the hinges; as, to unhinge a door.

2. To displace; to unfix by violence. Blackmore.

3. To render unstable or wavering; to unsettle; as, to unhinge one's mind or opinions; to unhinge the nerves. Why should I then unhinge my brains, ruin my mind South. His sufferings, nay the revolutions of his fate, had not in the least unhinged his mind. Walpole.

UNHINGEMENT
Un*hinge"ment, n.

Defn: The act unhinging, or the state of being unhinged.