1. Partly or entirely open to the sky
   - hypaethral

See also: unenclosed

• uncultivable
• uncultivatable
• uncultivated
• uncultured
• uncurbed
• uncured
• uncurl
• uncurled
• uncurtained
• uncurved
• uncurving
• uncus
• uncut
• undamaged
• undamped
• undatable
• undated
• undaunted
• undead
• undecagon
• undeceive
• undeceived
• undecided
• undecipherable
• undecipherably