Meaning & use

rely

verb·Everyday

Last updated

UK/rɪˈlaɪ/
US/rɪˈlaɪ/

Meanings

  1. verbintransitive

    To trust someone or something to do what you need, and to depend on it for help or support.

    Grammar: No direct object; it is followed by on or upon: rely on a friend.

    Patterns

    • rely on someone
    • rely on something to do something
    • rely on someone for something

    You can rely on me to bring the tickets.

    Many villages rely on rainwater for drinking.

    I relied on a map because my phone had no signal.

  2. verbintransitive

    To need something in order to function or survive, often so much that you could not manage without it.

    Grammar: Followed by on and often used with -ing: rely on volunteers.

    Patterns

    • rely heavily on something
    • rely on something for something

    The shop relies heavily on tourists in summer.

    Some plants rely on insects to spread their pollen.

    The team relies on its goalkeeper far too much.

Word forms

third person singularrelies
past tenserelied
past participlerelied
-ing formrelying

Common combinations

rely on someone
I rely on my sister for honest advice.
rely heavily on
The region relies heavily on farming.
rely solely on
Don't rely solely on one source.
can't rely on
You can't rely on the weather here.
rely on luck
He had to rely on luck to finish the race.
rely on the fact that
We rely on the fact that people will be honest.

Synonyms and how they differ

depend
Depend is very close, but it is also used for conditions (it depends on the weather), which rely does not cover.
count on
Count on is more informal and stresses expecting someone to come through.
trust
Trust focuses on belief in someone's honesty, while rely focuses on actually needing them.
lean on
Lean on is informal and suggests emotional or practical support from someone.

Opposites

Word family

reliable adjective
able to be trusted to work or behave well
reliability noun
the quality of being dependable
reliance noun
dependence on someone or something
reliant adjective
needing someone or something to function
unreliable adjective
not able to be trusted

Commonly confused: rely or rally?

rely vs rally

Rally means to come together or recover; it is not followed by on in the sense of depending.

Practice

Many small islands ___ ferries for food and medicine.

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