unhindered

adj

1. Not hindered, slowed, blocked or hampered.

   “Travel is enlivened not only by the mixed company of French, Berbers, Arabs, and descendants of the Mediterranean-Corsairs who sit together indiscriminately, but also by itinerant vendors of macaroons, sweetmeats and the like, who, as long as they have a travel ticket, ply their wares unhindered by the [ticket] collectors.”

   “The timing of the incident raised the question, almost certainly destined to remain unanswered, of whether, having allowed the escapers to pass by unhindered, the culprit had waited specifically for the yellow jersey group before sowing his mischief.”

   “Huddersfield: The station will be closed from August 30-September 29 to enable major Transpennine Route Upgrade work to proceed unhindered.”

2. Pertaining to a molecule where the reactive center is not blocked from chemical attack due to the surrounding uncreative substituents not preventing reactive agents accessing the reactive site.