Debility is a noun that describes a state of being weak or lacking strength physically or mentally. It refers to a condition where someone is not able to function or perform tasks as well as they used to due to a loss of energy or vitality.
The general debility of common cat viruses, feline leukemia and feline immunodeficiency as well as calicivirus, also make cats more susceptible to stomatitis. (2ndchance.info)
For the purposes of showbusiness entertainment, this film hugely exaggerates the drink - and drug - related debility of Getty's son John Paul II (Andrew Buchan) and ramps up the heroic importance of John Paul II's ex-wife Gail, the victim's mother, played with a kind of Katharine - Hepburn - lite accent by Michelle Williams. (theguardian.com)
It may be helpful as a sedative and analgesic for migraine and for nervous debility. (store.newwayherbs.com)