
Hinge upon
Conditional Success
Use 'hinge upon' to express that a successful outcome is uncertain and depends on a specific factor.

Our entire fundraising campaign hinges upon the celebrity endorsement.
Not Literal
'Hinge upon' is figurative and should not be used to describe physical objects connected by hinges.

Winning the case hinges upon the lawyer's argument, not a door's movement.
Singular Reason
Often highlights a single, crucial reason that will determine the final result.

Receiving the scholarship hinges upon your test scores.
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