| ail | prevent, obstruct, stop | 
			| bar | prevent, obstruct, block | 
			| bar | obstruction, barrier, obstacle | 
			| clearly | without interference, unobstructedly | 
			| clog | impede, hinder, obstruct [progress] | 
			| fair | favourable, unobstructed, clear | 
			| free | open, unobstructed, unimpeded | 
			| hamper | impede, obstruct, fetter | 
			| impediment | obstruction, hindrance, obstacle | 
			| interruption | resistance, hindrance, obstruction | 
			| obstruct | [debated meaning] obstruction, impediment, hindrance | 
			| obstruction | deathly state, rigor mortis | 
			| obstruction | obstacle, difficulty, hindrance | 
			| pester | obstructing, crowding, clogging | 
			| stop | obstruction, obstacle, hindrance | 
			| stop | block, hinder, impede, obstruct | 
			| stuffed | clogged, obstructed, oppressed |