pin (something) on (something)

to depend on something for a particular result.

We are all pinning our hopes on the new pipeline for a cleaner water supply.

• be up to the mark
• be up to your ears in
• be up to your ears in something
• be up to your eyeballs in
• be up to your eyeballs in something
• be up to your eyes in
• be up to your eyes in something
• be up to your neck in
• be up to your neck in something
• be up with the lark
• be waiting in the wings
• be walking on air
• be walking on eggshells
• be walking on thin ice
• be water off a duck's back
• be water under the bridge
• be wearing ... hat
• be wearing hat
• be wearing lawyer's hat
• be wearing teacher's hat
• be wearing [teacher's/lawyer's etc.] hat
• be wearing your ... hat
• be wearing your hat
• be wearing your lawyer's hat
• be wearing your teacher's hat