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

San Diego Gas & Electric says that the project would help increase California's supply of renewable energy and lessen the strain on the current power grid, lower energy costs and increase reliability during extreme weather or emergencies. — Dean Fioresi, CBS News, 27 June 2026

This focus on user convenience and reliability positions IONNA as a major player in the EV infrastructure. — Anthony Karcz, Forbes.com, 27 June 2026

Hamilton's win at Barcelona two weeks ago, his first with Ferrari after a year and a half of frustration, brought together smart strategy, Mercedes' reliability issues and innovation at Ferrari with key car parts that rivals have rushed to copy. — ABC News, 26 June 2026

Users praise its ease of use, reliability, picture quality, value for money and speed. — Tantse Walter, Space.com, 26 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