hold someone accountable (for something)
and hold someone responsible (for something)to consider someone responsible for something; to blame something on someone. I hold you accountable for John's well-being. I must hold you responsible for the missing money.
hold someone responsible
(for something) Go to hold someone accountable (for something).
responsible party
the person or organization responsible or liable for something. I intend to find the responsible party and get some answers to my questions. Mary sued the responsible party in the car crash.