| verb | hinder or prevent the progress or accomplishment of “His brother blocked him at every turn” |
| verb | block passage through “obstruct the path” |
| verb | shut out from view or get in the way so as to hide from sight “The thick curtain blocked the action on the stage” |
| obstruction | noun | the act of obstructing |
| obstructer | noun | someone who systematically obstructs some action that others want to take |
| obstructor | noun | someone who systematically obstructs some action that others want to take |
| blockage | noun | the physical condition of blocking or filling a passage with an obstruction |
| hindrance | noun | something immaterial that interferes with or delays action or progress |
| stymie | noun | a thwarting and distressing situation |
| obstructive | adjective | preventing movement |
| obturator | noun | a prosthesis used to close an opening (as to close an opening of the hard palate in cases of cleft palate) |
| impediment | noun | any structure that makes progress difficult |
| occlusive | adjective | tending to occlude |
| occlusion | noun | the act of blocking |
| blocking | noun | the act of obstructing or deflecting someone's movements |