The success of the project relies heavily on teamwork.
rely completely
Frequency:
60
%
I rely completely on my GPS to navigate unfamiliar places.
rely solely
Frequency:
45
%
She relied solely on her instincts to make decisions.
Idiomatic Expressions for rely
Phrase: rely on someone's word
Meaning: to trust that someone will do what they say they will do
Usage: I rely on my coworker's word that she will finish the project on time.