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

Management quality, balance sheet strength and production reliability can matter just as much as silver's price trends, though. —Angelica Leicht, CBS News, 17 Feb. 2026

Administrator Lee Zeldin said the changes are meant to support electricity grid reliability while safeguarding human health and the environment. —Karl Schneider, IndyStar, 17 Feb. 2026

The $8,949 Burgman 400 has built its reputation on refined comfort and proven reliability over decades on the market. —New Atlas, 17 Feb. 2026

Toyotas aren’t cheap, but their reliability is unmatched, which offsets the pricetag. —Jakob Schiller, Outside, 16 Feb. 2026

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