reliability

noun

re·​li·​abil·​i·​ty ri-ˌlī-ə-ˈbi-lə-tē 

1

: the quality or state of being reliable

2

: the extent to which an experiment, test, or measuring procedure yields the same results on repeated trials

Synonyms of reliability

• reliableness
• dependability
• responsibility
• trustworthiness
• solidity

Examples of reliability in a Sentence

we never had reason to question the reliability of the park rangers in the event of an emergency

Recent Examples on the Web

Its value depends on a combination of its performance on various benchmarks, reliability, latency, context length, integration into business systems, and the skill of the operator. —James Broughel, Forbes.com, 6 June 2026

The pipelines project is designed to improve long-term water reliability for the Barona Band by bringing in new sources of drinking water and recycled water, Barona officials have said. —Julie Gallant, San Diego Union-Tribune, 4 June 2026

Officials say the change is also designed to improve travel reliability through a key freight and commuter route on the east side of the metro area. —Daniel Wilkerson, CBS News, 4 June 2026

There are some obvious drawbacks like space, reliability, utilities and more, but if your wallet is your only concern, RVing seems like a manageable cost solution. —Caden Perry, jsonline.com, 4 June 2026

Word History

First Known Use

1810, in the meaning defined at sense 1

Rhymes for reliability

• affability
• audibility
• bistability
• capability
• changeability
• contractility
• credibility
• culpability
• disability
• disutility
• durability
• fallibility

Kids Definition

reliability

noun

re·​li·​abil·​i·​ty ri-ˌlī-ə-ˈbil-ət-ē 

plural reliabilities

: the quality or state of being reliable

Medical Definition

reliability

noun

re·​li·​abil·​i·​ty ri-ˌlī-ə-ˈbil-ət-ē 

plural reliabilities

: the extent to which an experiment, test, or measuring procedure yields the same results on repeated trials