hinging on
phraseUK /ˈhɪndʒɪŋ ɒn/
US /ˈhɪndʒɪŋ ɑːn/
Depending on something to happen or be true.
The whole plan is hinging on the weather staying sunny.
RELATED WORDS
OTHER MEANINGS
2. Being attached to and turning on a hinge.
The gate was hinging on a rusty old hinge.
3. Being the key point that everything else depends on.
The success of the project is hinging on one final decision.
4. Relying completely on a single person or thing.
Her hopes were hinging on a single phone call.