Akademik

feebleness
noun
1. the state of being weak in health or body (especially from old age) (Freq. 1)
Syn: ↑infirmity, ↑frailty, ↑debility, ↑frailness, ↑valetudinarianism
Derivationally related forms: ↑frail (for: ↑frailness), ↑feeble, ↑debile (for: ↑debility), ↑debilitate (for: ↑debility), ↑infirm (for: ↑infirmity)
Hypernyms: ↑unfitness, ↑softness
Hyponyms: ↑asthenia, ↑astheny, ↑cachexia, ↑cachexy, ↑wasting
2. the quality of lacking intensity or substance
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"a shrill yet sweet tenuity of voice"- Nathaniel Hawthorne

Syn: ↑tenuity
Derivationally related forms: ↑feeble, ↑tenuous (for: ↑tenuity)
Hypernyms: ↑weakness

Useful english dictionary. 2012.