hinge (up)on (someone or something)

hinge (up)on (someone or something)

To be dependent or reliant on someone or something. Our vacation plans hinge on how quickly the hurricane gets to the island.
See also: hinge
Farlex Dictionary of Idioms.

hinge (up)on someone or something

Fig. to depend on someone or something; to depend on what someone or something does. (Upon is formal and less commonly used than cm.) The success of the project hinges upon you and how well you do your job. How well the corn crop does all hinges on the weather.
See also: hinge, on
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

hinge on

Also, hinge upon. Depend or be contingent on, as in This plan hinges on her approval. This expression employs the verb hinge in the sense of "to hang," as a door would hang on a hinge, a usage dating from the early 1700s.
See also: hinge, on
The American Heritage® Dictionary of Idioms by Christine Ammer.

hinge on

or hinge upon
v.
To depend on something or someone. Used of facts, events, and situations: The success of this play hinges on three weeks of rehearsal. Whether or not we reach our fundraising goal hinges upon our volunteers.
See also: hinge, on
The American Heritage® Dictionary of Phrasal Verbs.
See also:
  • hinge
  • hinge on
  • rely
  • rely on
  • rely upon (someone or something)
  • access
  • access to
  • access to (someone or something)
  • pin (one's) faith on (someone or something)
  • pin faith on