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

• dependability
• dependableness
• reliableness
• responsibility
• solidity
• solidness
• sureness
• trustability
• trustworthiness

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

Understanding its physiology involves dissecting the core components and processes that ensure authenticity and reliability. —Glen Robinson, Forbes, 10 Jan. 2025

Paired with an aging grid and the increasing risk of cyber threats, concerns are mounting about the grid's reliability. —Chris Gallagher, USA TODAY, 10 Jan. 2025

The model accurately predicted the binary system’s orbit today, lending further confidence in its reliability. —Margherita Bassi, Smithsonian Magazine, 9 Jan. 2025

That should ease your worries about battery reliability at the very least. —New Atlas, 6 Jan. 2025

Word History

First Known Use

1810, in the meaning defined at sense 1

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