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Synset

something immaterial that stands in the way and must be circumvented or surmounted
<noun.cognition>   freq. cnt.: 5 freq. cnt.: 5

sample sentences

"lack of imagination is an obstacle to one's advancement"
"the poverty of a district is an obstacle to good education"
"the filibuster was a major obstruction to the success of their plan"
semantic pointers
hypernym
hyponym