RELIABILITY
dependability, dependableness, reliability, reliableness
(noun) the quality of being dependable or reliable
Source: WordNet® 3.1
Etymology
Noun
reliability (usually uncountable, plural reliabilities)
The quality of being reliable, dependable, or trustworthy.
Synonym: dependable
Synonym: unreliable
(education) the ability to measure the same thing consistently (of a measurement indicating the degree to which the measure is consistent); that is, repeated measurements would give the same result (See also validity).
(engineering) measurable time of work before failure
Source: Wiktionary
Re*li`a*bil"i*ty (r-l`-bl"-t), n.
Definition: The state or quality of being reliable; reliableness.
Source: Webster’s Unabridged Dictionary 1913 Edition