Definition of debilitating
: causing serious impairment of strength or ability to function
debilitating pain a debilitating fear of public speaking a debilitating illness Thirty years have passed since a vaccine wiped out polio, but some of those who conquered the debilitating disease as children are now experiencing symptoms that seem all too familiar.— Fay Knicely Several of these drugs are now in clinical testing to determine whether they can reduce or eliminate the debilitating nausea suffered by cancer patients on chemotherapy.— Ron Cowen
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Merriam-Webster unabridged
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Time Traveler for debilitating
The first known use of debilitating was in 1641
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