'dependability' definitions:

Definition of 'dependability'

From: WordNet
noun
The quality of being dependable or reliable [syn: dependability, dependableness, reliability, reliableness] [ant: undependability, undependableness, unreliability, unreliableness]

Definition of 'dependability'

From: GCIDE
  • dependability \dependability\ n. the trait of being dependable or reliable.
  • Syn: dependableness, reliability, reliableness. [WordNet 1.5]