depend
/di-ˈpend/
verb
to be determined, based, or contingent
to be pending or undecided
to place reliance or trust
life depends on food
phrasal verb
to be determined or decided by (something)
to need (someone or something) for support, help, etc.
to be sure about (someone or something) : to trust (someone or something) —sometimes used humorously
We're not sure if we'll have the picnic. It depends on the weather.
verb
to depend upon one another : to be in a state of mutual dependence
Canada and the United States, on the other hand, interdepend on a wide range of issues.