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								1.
								hinder or prevent the progress or accomplishment of 
								2.
								block passage through 
								obstruct the path 
								3.
								shut out from view or get in the way so as to hide from sight 
								The trees obstruct my view of the mountains 
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				derived forms		
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			1. Obstruct / Past 
			obstructed 
			2. Obstruct / Third Person 
			obstructs 
			3. Obstruct / Present Participle 
			obstructing 
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