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

Like his peers in the candidate field, Pollard is focusing on greater transparency and reliability in the tax assessment process. — Ilana Arougheti, Kansas City Star, 27 July 2026

January 20 – February 18 A partnership may reveal where independence and reliability need a better agreement. — Tarot.com, The Orlando Sentinel, 27 July 2026

Younger buyers increasingly judge vehicles not only by fuel economy and reliability, but by digital connectivity, charging convenience, software integration, performance, continuous feature updates and of course price. — Peter Lyon, Forbes.com, 26 July 2026

Hardware undergoes extensive testing before moving underground Ensuring the reliability of every line-replaceable unit (LRU) has been a key focus throughout the Scorpius project. — Bojan Stojkovski, Interesting Engineering, 26 July 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