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

Son’s reliability late on his been sorely missed by Spurs and the same could be said about Nunez, who often caused havoc towards the end of matches for Jurgen Klopp’s Liverpool. — Art De Roché, New York Times, 23 Aug. 2026

Improving on the reliability of the Mk4A They are used in the current stockpile of W76-1 and W76-2 warhead variants. — Christopher McFadden, Interesting Engineering, 23 Aug. 2026

Those standards can examine technical proficiency, past cyber operations, facility security, personnel vetting and reliability. — Kurt Knutsson, FOXNews.com, 22 Aug. 2026

If model routing becomes a matter of finding the cheapest one that meets a customer’s requirements for quality, speed, and reliability, OpenRouter now has an advantage. — Reed Albergotti, semafor.com, 21 Aug. 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