enfeebling

ɪnˈfiːb(ə)l
ɛnˈfiːb(ə)l

verb

make weak or feeble.

sickness had enfeebled me

weaken,make weak,make feeble,debilitate,incapacitate,indispose,prostrate,immobilize,lay low,disable,handicap,cripple,paralyse,drain,sap,exhaust,tire,fatigue,devitalize,knock out,do in,shatter,knacker,torpefy