obstruct (v.)
- arrest
- backpedal
- bar
- barricade
- bind
- block
- blockade
- bolt
- brake
- bung
- caulk
- check
- chink
- chock
- choke
- clog
- close
- confine
- congest
- constipate
- constrict
- cork
- counter
- cover
- crowd
- curb
- dam
- debar
- decelerate
- delay
- detain
- dog
- drag
- fend
- fill
- forbid
- foul
- halt
- hamper
- hinder
- impede
- interrupt
- jam
- lag
- lock
- moderate
- obstipate
- occlude
- pack
- parry
- plug
- preclude
- prevent
- prohibit
- rebuff
- reef
- relax
- repel
- repulse
- retard
- shroud
- slacken
- slow
- squeeze
- stall
- stanch
- stay
- stifle
- stop
- stopper
- stopple
- strangle
- strangulate
- stuff
- suffocate