1) Age 2) Dilapidation 3) Disrepair 1) Decrepit condition 2) Deterioration 3) Dilapidated state 4) Dilapidation 5) French word used in English 6) Impairment 
• (n.) The broken state produced by decay and the infirmities of age; infirm old age.
Feebleness due to Old Age
De·crep'i·tude noun [ Confer French décrépitude .] The broken state produced by decay and the infirmities of age; infirm old age. 
[n] - a state of deterioration due to old age or long use
decrepitude The quality or condition of being weakened, worn out, impaired, in poor working order, or broken down by old age, illness, or hard use.
dilapidation noun a state of deterioration due to old age or long use
decrepit condition; dilapidated state; feebleness, esp. from old age.