: to need (someone or something) for support, help, etc. : to depend on (someone or something)
My mother relied on me for financial support. They rely on a well for all their water.
: to trust or believe (someone or something)
She's someone you can rely on. I relied heavily upon your advice. You could always rely on him to disagree.
: to expect (something) with confidence : to be certain that (something) will happen or exist
The economy may improve next year, but it's not something you can rely on.
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