rely on/upon

Definition of rely on/upon

1 :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.
2 :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.
3 :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.

Word by Word Definitions

rely play
  1. : to be dependent

  2. : to have confidence based on experience

upon play
  1. : on

  1. : on the surface : on it

  2. : thereafter, thereon


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