durability (n.)

"power of lasting or continuing in the same state, resistance to decay or dissolution," late 14c., from Old French durabilité and directly from Late Latin durabilitatem (nominative durabilitas), noun of quality from Latin durabilis "lasting, permanent," from durare "to harden," from durus "hard," from PIE *dru-ro-, suffixed variant form of root *deru- "be firm, solid, steadfast."