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

This incident follows similar outages in April and November, raising concerns about the reliability of air traffic control systems at the airport. —Josh Rivera, USA Today, 9 May 2025

The actor was drawn to the reliability of growing up with a grandmother who always cooked in the house. —Lea Veloso, StyleCaster, 9 May 2025

The biggest challenges in this space are the complexity of the technology, the high level of customization and the general reliability. —Expert Panel®, Forbes.com, 7 May 2025

His reliability on the field, however, doesn’t come without effort behind the scenes. —Noah Gulley, Miami Herald, 6 May 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