invious

untrodden

Adjective

  1. untrodden
    • If nothing can oppugne love, And virtue invious ways can prove, What may not he confide to do That brings both love and virtue too? - 1662 (indicated as 1663), [Samuel Butler], “[The First Part of Hudibras]”, in...
  2. impassable

Origin

From Latin invius, from in- (“not”) + via (“way”).