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

• 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

What are your compliance and reliability requirements? —Alex Gudilko, Forbes.com, 9 July 2025

The disinformation campaign was therefore not only aimed at an aircraft, but more broadly at a national image of strategic autonomy, industrial reliability and solid partnerships. —Micah McCartney, MSNBC Newsweek, 7 July 2025

For reasons including product safety and reliability, battery technology discoveries take years to reach the marketplace. —Rick Barrett, jsonline.com, 7 July 2025

The right device can impact your internet speed, reliability and even your monthly costs. —Roxanne Downer, USA Today, 4 July 2025

Word History

First Known Use

1810, in the meaning defined at sense 1

Rhymes for reliability

• acceptability
• accessibility
• adaptability
• admissibility
• advisability
• affordability
• allowability
• amenability
• amiability
• appealability
• applicability
• availability

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