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

Defn: To detach or loose from a coach. [Obs.] Chapman.

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

1. To let down the cock of, as a firearm.

2. To deprive of its cocked shape, as a hat, etc.

3. To open or spread from a cock or heap, as hay.

UNCOFFLE
Un*cof"fle, v. t. Etym: [1st pref. un- + coffle.]

Defn: To release from a coffle.

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

Defn: To deprive of the coif or cap. Young.