Dic:// on the hook

─. on the hook:

1. Held responsible (for something); obliged or committed (to something).

• I would think very carefully signing your name to those documents. If something goes wrong in the company, it could be you on the hook.
• I'm on the hook for nearly half a million dollars after my partner skipped town with the company's pension fund!

2. In a continually and/or indefinitely delayed condition or state.

• We've had the suspect on the hook in the interrogation room for about 12 hours now. We're keeping him guessing in the hopes that he'll let some information slip.

─. on the hook for (US, informal): owing money for (something); responsible for (something)

• He's still on the hook for the cost of the repairs.

..... Farlex Dictionary of Idioms; Merriam-Wbster Learners; ..