It's nice when someone compliments your reliability because it means they think you are dependable. Things that are known for reliability? Your best friend, sunrise, sunset and unfortunately also taxes.

The word is a new one and didn't become common until after 1850 during the Industrial Revolution. Before things were mass produced, how reliable they were was not such an issue. Interesting fact: reliability is an American word, and the Brits scoffed at its new usage.

Definitions of reliability

n the quality of being dependable or reliable

dependability, dependableness, reliableness
undependability, undependableness, unreliability, unreliableness
the trait of not being dependable or reliable
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solidity, solidness
the quality of being solid and reliable financially or factually or morally
the quality of never making an error
duplicability, reproducibility
the quality of being reproducible
(Christianity) exemption from error
papal infallibility
belief of the Roman Catholic Church that God protects the pope from error when he speaks about faith or morality
Type of:
responsibility, responsibleness
a form of trustworthiness; the trait of being answerable to someone for something or being responsible for one's conduct

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