Strong's G769 — ἀσθένεια (noun)
astheneia (as-then'-ei-ah) n.
1. feebleness (of mind or body)
2. (by implication) malady
3. (morally) frailty
[from G772]
KJV: disease, infirmity, sickness, weakness 
Root(s): G772 
Hebrew root: ἀσθενής
Occurrences: 24