stultify (v.)
- annul
- asphyxiate
- befool
- buffer
- cancel
- censor
- check
- constipate
- cork
- counterbalance
- crush
- deaden
- discourage
- drown
- dull
- dupe
- enfeeble
- extinguish
- frustrate
- gag
- gull
- impair
- infatuate
- inhibit
- invalidate
- kill
- muzzle
- negate
- negative
- neutralize
- nullify
- offset
- quash
- quell
- quench
- repress
- restrain
- silence
- smash
- smother
- squash
- squelch
- stagnate
- stanch
- stifle
- strangle
- stunt
- subdue
- suffocate
- suppress
- throttle
- thwart
- trammel
- undo
- vitiate
- void
- weaken