reliability

/rɪˌlaɪəˈbɪləti/
noun
  1. The quality of being trustworthy or dependable; the ability to be relied on to do what is expected or needed.
    • The reliability of this car means it almost never breaks down.
    • Employers value reliability in their workers because it keeps projects on schedule.
    • We chose this bank for its reliability in handling customer accounts.
  2. The degree to which a system, machine, or device performs its required function without failure over a period of time.
    • The software update improved the system's reliability and reduced crashes.
    • Engineers test the reliability of the new bridge by simulating heavy traffic.
    • Solar panels are known for their long-term reliability in generating power.
  3. The trustworthiness of information, data, or a source; the extent to which something can be believed or accepted as true.
    • For research, you should use sources with high reliability, like peer-reviewed journals.
    • The reliability of the news report was questioned after several errors were found.
    • Scientists check the reliability of their data by repeating experiments.