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

Reliable interconnect solutions - link flaps have been one of the biggest issues impacting network reliability and ensuring that the network and the interconnects are highly reliable to prevent any disruption to expensive GPU resource utilization. —CBS News, 20 Jan. 2026

Questions have also arisen over the reliability of witness evidence, said The Times. —Will Barker, TheWeek, 20 Jan. 2026

While recent headlines have been quieter relative to its peers, Sempra’s long-term story centers on steady rate-base growth, system reliability, and its strategic position in energy delivery markets tied to population growth and the increasing need for electric power. —Josh Brown,sean Russo, CNBC, 20 Jan. 2026

Younger cohorts increasingly expect brands to anticipate needs and adapt experiences in real time, while older generations reward reliability and trust. —Gary Drenik, Forbes.com, 20 Jan. 2026

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