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

It was then safely demagnetized, proving the reliability of the new approach. —Sujita Sinha, Interesting Engineering, 29 Sep. 2025

In terms of his pace, length and defensive reliability, Åman is a useful NHL depth option. —Thomas Drance, New York Times, 29 Sep. 2025

We are ever meant to question the narrative reliability here. —Ryan Lattanzio, IndieWire, 28 Sep. 2025

The inaugural study of more than 14,000 people measured the reliability of appliances bought within three years and the overall service visit experience. —Betty Lin-Fisher, USA Today, 25 Sep. 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