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Similar Words: obstruction, obstructor, obstructer, impediment

 

Hyponyms: bar, barrier, blockade, blockage, block, closure, occlusion, stop, stoppage, hindrance, hitch, preventive, preventative, encumbrance, incumbrance, interference, obstacle, tumbler

 

Derivational Morphology: obstruct, obturate, impede, occlude, jam, block, close up