obstructions restrictions stays dampers Inhibitions mires complications deterrents plugs impediments clogs cul-de-sacs stoppages hurdles blocks snarls bottlenecks restraints drags Frustrations catches burdens jams encumbrances blockages brakes entrapments constraints interruptions crimps handicaps entanglements obstacles snags Delays barriers chokes stops bungs drawbacks tangles blockades dams oppositions hindrances impasses