Unobstructed means clear and open, with nothing blocking the way or view. When you have an unobstructed view of the stage at a concert, no tall person's head or pillar stands between you and the performers. When a hallway is unobstructed, you can walk straight through without having to squeeze past furniture or step over backpacks.

An unobstructed road has no fallen trees or construction barriers across it. An unobstructed drain lets water flow freely.

You'll often hear this word describing sight lines and pathways. A basketball player needs an unobstructed path to the basket. A photographer wants an unobstructed shot of a rare bird, with no branches in the way. Firefighters make sure emergency exits remain unobstructed so people can escape quickly if needed. When something is unobstructed, it's free, clear, and accessible, allowing movement, vision, or flow to happen without interference.