Not obstructed; not filled with impediments; not hindered or stopped; clear: as, an unobstructed stream or channel.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adj. free from impediment or obstruction or hindrance
Word Usage
"Most importantly, shifting the magnified view up leaves the unmagnified view of the road unobstructed, which is important for safety and facilitates navigation ..."