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

Novel chemistry with reliability testing The study solved both problems by changing the solvent recipe used to grow the crystals. — Aman Tripathi, Interesting Engineering, 16 Aug. 2026

If your priorities are safety, passenger room and long-term reliability, the Honda Pilot remains one of the best choices in the midsize SUV segment. — John Paul Senior Manager Public Affairs and Traffic Safety Aaa Northeast, Hartford Courant, 15 Aug. 2026

Hobbyists constantly ask for bigger build volumes, but scaling a CoreXY machine beyond the typical desktop footprint introduces a very different class of engineering challenges involving motion control, thermal management, rigidity, and reliability. — Michael Lydick, PC Magazine, 15 Aug. 2026

Reportedly this approach could boost reliability by reducing the number of mechanical components. — New Atlas, 14 Aug. 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