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

As the race for innovation continues, the success of programs like God’s Eye may ultimately depend on whether manufacturers can prove that advanced driving technologies deliver measurable improvements in safety, reliability, and consumer trust. —Prabhat Ranjan Mishra, Interesting Engineering, 30 May 2026

While copper is the main connectivity standard today because of its lower cost and high reliability, photonics will become more prominent in AI infrastructure over time, Brian Colello, senior equity analyst at Morningstar, told CNBC. —Kai Nicol-Schwarz, CNBC, 29 May 2026

Andrea discusses Hancock’s improved reliability Arm slot Hancock lowered his arm slot by 6 degrees. —Andrea Arcadipane, New York Times, 29 May 2026

My niece was celebrated for her grades, her discipline and her quiet reliability. —Huaying Wang, The Conversation, 29 May 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