reliability
n. uncountablen. the quality of being able to be trusted or depended on. If a machine or a person has this, you know they will work well or do what they promised.
n. the quality of being trustworthy or performing consistently well. In technical contexts, it refers to the probability that a system or component will function without failure under stated conditions for a specified period.
The car is famous for its mechanical reliability.
When choosing a new supplier, the company prioritizes reliability over low costs to avoid production delays.
Engineers must conduct rigorous stress tests to ensure the long-term reliability of the bridge's structural components under extreme weather conditions.
From reliable + -ity.
Uncountable in its general sense; frequently modified by adjectives like 'high', 'low', or 'mechanical'.