is a specific kind of: responsibility, responsibleness.

is a broader term that covers: solidity, solidness | infallibility | duplicability, reproducibility.

is the opposite of: undependability, undependableness, unreliability, unreliableness.

derivation: dependable, reliable | dependable, good, safe, secure | dependable, rock-steady, steady-going | authentic, reliable | dependable, honest, reliable, true.