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English definition of “reliable”

reliable

adjective uk   /rɪˈlaɪə.bl̩/ us  
B1 Someone or something that is reliable can be trusted or believed because he, she, or it works or behaves well in the way you expect: Is your watch reliable? reliable information Gideon is very reliable - if he says he'll do something, he'll do it.
Opposite
Loyal, faithful and dependable
reliability
noun [U] uk   /rɪˌlaɪəˈbɪl.ɪ.ti/ us    /-ə.t̬i/
C1 Rolls-Royce cars are famous for their quality and reliability.Loyal, faithful and dependable
reliably
adverb uk   /-bli/ us  
I am reliably informed that you have been talking about resigning from the company.Loyal, faithful and dependable
(Definition of reliable from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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