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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. © 2015 Farlex, Inc, all rights reserved.
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.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
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.
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
hinge onor hinge upon
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.
The American Heritage® Dictionary of Phrasal Verbs. Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.