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

The aviation industry has long been cautious about innovation, a stance rooted in valid concerns around safety and reliability. —Tanya Fileva, Forbes.com, 27 June 2025

Limiting renewable energy development also raises concerns about electric reliability, says Heather Reams, president of Citizens for Responsible Energy Solutions, a right-of-center advocacy group. —Michael Copley, NPR, 27 June 2025

The goal is to align MARC service with changing travel patterns and market demands while maintaining safety and reliability, according to MTA officials. —Todd Karpovich, Baltimore Sun, 26 June 2025

The remarks revived European allies' concerns about Washington's security partner reliability. —Amanda Castro hannah Parry shane Croucher, MSNBC Newsweek, 24 June 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