unpent

un- +‎ pent. Compare Old English onpennad (“unpent, open”).

unpent (comparative more unpent, superlative most unpent)

1. Not pent or pent up, unconfined, released.
   • 1831, William Stewart Rose, Orlando Furioso‎:

     Not with the rage with which this whirlwind blows, Joust warring winds, north, south, and east, unpent.

   • 1911, H. G. Wells, The Country of the Blind, And Other Stories‎:

     And there, unpent by mountains, one saw the sky—the sky, not such a disc as one saw it here, but an arch of immeasurable blue, a deep of deeps in which the circling stars were floating...

• punnet