rely on/upon phoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticphonetic phrasal verb [T]  

1. to depend on or trust (someone or something) 

    British weather can never be relied upon - it's always changing.
    I rely on you for good advice.
    I'm relying on the garage to fix the car by tomorrow. [+ obj + to infinitive]
    Don't rely on finding me here when you get back (=I might have gone). [+ v-ing]
    The success of this project relies on everyone making an effort. [+ obj + v-ing]
    You can always rely on him making a fool of himself (=He always makes himself look foolish). [+ obj 
    + v-ing]

reliable phoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticphoneticadjective 

1. Something that is reliable can be trusted because it works well. 

    Is your watch reliable?
    My car is seven years old but it's still fairly reliable.
    We have it on reliable evidence (=We have been told by someone who can be trusted) that there are 
    plans to build a road here.


2. Someone who is reliable can be trusted because they always behave well and in the way you expect. 


    John is very reliable - if he says he'll do something he'll do it.

reliably phoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticphonetic adverb 

    I am reliably informed (=I have been told by someone whom I trust) that you have been talking about 
    resigning from the company.


reliability phoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhonetic PhoneticPhoneticPhoneticPhoneticPhoneticPhoneticphonetic noun [U] 

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

reliance phoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticphonetic noun [U] 

1. Reliance is a dependence on or trust in something or someone. 


    The region's reliance on tourism is unwise.
    You place too much reliance on her ideas and expertise.

reliant phoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticphonetic adjective 

    She's completely reliant on (=She depends on) her next-door neighbour to do all her shopping and 
    cleaning.


See also self-reliant.

This page is cited from Cambridge Dictionaries Online. For the original, please visit
http://dictionary.cambridge.org/define.asp?key=rely.onupon*1+0