Word Study
unpen
CIDE DICTIONARY
unpen, v. t. [1st pref. un- + pen.].
To release from a pen or from confinement. Blackstone. [1913 Webster]
THESAURUS
unpen
loose, loosen, unbar, unbind, unbolt, unbridle, unbuckle, uncage, unchain, unfetter, ungag, unhandcuff, unhobble, unlash, unlatch, unleash, unlock, unloose, unloosen, unmanacle, unmuzzle, unpinion, unshackle, unstrap, untether, untie, untruss, unyokeFor further exploring for "unpen" in Webster Dictionary Online