Synonyms: snag, rub, hang-up, hitch
Definition: an unforeseen obstacle
Similar words: obstacle, obstruction
Definition: something immaterial that stands in the way and must be circumvented or surmounted
Usage: 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
Synonyms: hang-up
Definition: an emotional preoccupation
Similar words: preoccupation
Definition: an idea that preoccupies the mind and holds the attention