obstructive

verb (used with object)

1. to block or close up with an obstacle; make difficult to pass: Debris obstructed the road.
2. to interrupt, hinder, or oppose the passage, progress, course, etc., of.
3. to block from sight; to be in the way of (a view, passage, etc.).

verb (tr)

1. to block (a road, passageway, etc) with an obstacle
2. to make (progress or activity) difficult
3. to impede or block a clear view of

adj.1610s, from Latin obstruct-, past participle stem of obstruere (see obstruction) + -ive. v.1610s, a back-formation from obstruction or else from Latin obstructus, past participle of obstruere “to block, to stop up” (see obstruction). Related: Obstructed; obstructing. v.

1. To block or close a body passage so as to hinder or interrupt a flow.