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reliable adjective

/rɪˈlaɪə.bl ̩/

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Definition

Something or someone that is reliable can be trusted or believed because they work or behave 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: unreliable

reliability noun

/rɪˌlaɪəˈbɪl.ɪ.ti//-ə.t ̬i/ [U]

Rolls-Royce cars are famous for their quality and reliability.

reliably adverb

/rɪˈlaɪə.bli/

I am reliably informed that you have been talking about resigning from the company.