something immaterial that stands in the way and must be circumvented or surmounted: "lack of immagination 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 su
2
decrease
a process of becoming smaller
2
destruction
termination by an act of destruction
1
abortion
termination of pregnancy
1
hindrance
something immaterial that interferes with or delays action or progress
