noun

reliability

dependability, trustworthiness

The car is known for its reliability.

The car is known for its reliability.

We need to test the reliability of the data.

We need to test the reliability of the data.

the reliability ((of sth.)) the dependability of (sth.) The reliability of the witness was questioned.

Synonyms: dependability, trustworthiness, consistency; Antonyms: unreliability

From the adjective 'reliable', which comes from 'rely' + '-able'. So, it's the quality of being able to be relied upon.

Think of it as 'rely-ability'. It's the ability of something or someone to be relied upon.

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