in·fir·mi·ty /ɪnˈfɝməti/
  虛弱,病身,疾病
  in·fir·mi·ty /ɪnˈfɝmətɪ/ 名詞
  衰弱,虛弱
  In·firm·i·ty n.; pl. Infirmities
  1. The state of being infirm; feebleness; an imperfection or weakness; esp., an unsound, unhealthy, or debilitated state; a disease; a malady; as, infirmity of body or mind.
     'T is the infirmity of his age.   --Shak.
  2. A personal frailty or failing; foible; eccentricity; a weakness or defect.
     Will you be cured of your infirmity ?   --Shak.
     A friend should bear his friend's infirmities.   --Shak.
     The house has also its infirmities.   --Evelyn.
  Syn: -- Debility; imbecility; weakness; feebleness; failing; foible; defect; disease; malady. See Debility.
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  infirmity
       n : the state of being weak in health or body (especially from
           old age) [syn: frailty, debility, feebleness, frailness]