advanced age
advanced years
adynamia
age of retirement
an incurable disease
anemia
anility
atony
blah feeling
bloodlessness
brain fag
cachexia
cachexy
caducity
chronic ill health
cowardice
debilitation
decline of life
declining years
decrepitude
delicacy
delicate health
disease
dotage
dullness
eld
elderliness
enervation
enfeeblement
etiolation
exhaustion
eyestrain
faintness
fatigue
feebleness
flabbiness
flaccidity
fragility
frailty
goneness
green old age
hale old age
healthlessness
heart strain
hoary age
hypochondria
hypochondriasis
ill health
imbecility
softness
unfitness
asthenia
astheny
wasting
debile
debilitate
deafness
derangement
dizziness
drowsiness
emaciation
epilepsy
inability
indigestion
infirmity
irritability
languor
lassitude
laziness
malaise
neurasthenia
paralysis
prostration
rheumatism
tiredness
ability
acceptability
adaptability
admissibility
affordability
agility
amiability
applicability
availability
capability
civility
combinability
compatibility
comprehensibility
deductibility
docility
ductility
electability
feasibility
fertility
flexibility
futility
hostility
inaccessibility
invisibility
irresponsibility
legibility
malleability
mobility
nobility
palatability
possibility
probability
reliability
responsibility
senility
susceptibility
utility
versatility
viability
virility
volatility