debilitate (v.)
- abate
- afflict
- attenuate
- beat
- blunt
- bugger
- cramp
- cripple
- damp
- dampen
- de-energize
- deaden
- derange
- devitalize
- disable
- disenable
- disorder
- drain
- dull
- enervate
- enfeeble
- eviscerate
- exhaust
- extenuate
- fag
- fatigue
- flag
- frazzle
- hamstring
- harass
- hospitalize
- hurt
- inactivate
- incapacitate
- indispose
- invalid
- jade
- kibosh
- lame
- maim
- mar
- mitigate
- overfatigue
- overstrain
- overtire
- overweary
- prostrate
- put
- queer
- rattle
- reduce
- sabotage
- sap
- shake
- sicken
- spike
- spoil
- tire
- tucker
- unbrace
- undermine
- unfit
- unman
- unnerve
- unstring
- weaken
- wear
- weary
- wilt
- wind
- wing
- wreck