[syn: feebleness, tenuity]
The Collaborative International Dictionary of English v.0.48:
Feebleness \Fee"ble*ness\, n.
   The quality or condition of being feeble; debility;
   infirmity.
   [1913 Webster]
         That shakes for age and feebleness.      --Shak.
   [1913 Webster]
WordNet (r) 3.0 (2006):
feebleness
    n 1: the state of being weak in health or body (especially from
         old age) [syn: infirmity, frailty, debility,
         feebleness, frailness, valetudinarianism]
    2: the quality of lacking intensity or substance; "a shrill yet
       sweet tenuity of voice"- Nathaniel Hawthorne [syn:
       feebleness, tenuity]