decrepitude

noun

1 over the years she fell into a state of decrepitude:

feebleness, enfeeblement, infirmity, weakness, frailty, debilitation, debility, sickliness, incapacitation, malaise;

old age, agedness, elderliness, dotage, senility;

superannuation, senescence.

▷antonyms strength, fitness.

2 the house had an air of decrepitude:

dilapidation, ricketiness, dereliction, ruin, disrepair, rack and ruin, decay, deterioration.

▷antonyms soundness, good repair.