durability

[L. durabilitas.]
The state or quality of being durable; the power of uninterrupted or long continuance in any condition; the power of resisting agents or influences which tend to cause changes, decay, or dissolution; lastingness.

A Gothic cathedral raises ideas of grandeur in our minds by the size, its height, . . . its antiquity, and its durability.

Definition: sturdiness over time
Antonyms: impermanency, poorness, unreliability, weakness

1. The ability of a material, component, assembly, or building to resist weathering action, chemical attack, abrasion, and other conditions of service.
2. The resistance of a particular species of wood to decay.