Why this word is great
DECREPITUDE — [Noun] The state of being decrepit, worn out, or broken down, especially from age or long use. From Middle French décrépitude, from Latin dēcrepitūdō, from dēcrepitus ("very old, decrepit"), from dē- ("utterly") + crepitus, past participle of crepāre ("to crack, creak"). Unlike "senility," which narrows to the mind's faltering, or "dilapidation," which fixes on structural neglect, decrepitude is the holistic and sentient decay of any system—body, building, or institution—undone by the cumulative friction of time. It is the arthritic groan of an oak staircase underfoot, the rust-weeping hinge that will no longer close, and the paper-thin skin stretched over a bird-like wrist; a quiet, percussive music of things that have creakingly endured, and are now being patiently worn away into the same, crumbling language.