unsurfaced

English

Etymology

un- +‎ surfaced

Adjective

unsurfaced (not comparable)

1. (road transport, etc.) Not having a tar macadam (asphalt) or other paved surface.
   • 2024 March 20, Chris Howe, “High speed underneath the Chilterns...”, in RAIL, number 1005, page 33:

     The master plan for the site includes 3.3km of new surfaced and unsurfaced walking routes, more than 1km of new bridleways and cantering routes, and retention of the 2.3km Old Shire Lane bridleway.

2. (paper) Rough, absorbent, without a glaze or finish.
3. (submarines) Below the surface.