Culpable

/ˈkʌl.pə.bəl/ adjective medium

Deserving blame for a wrongful act or failure to act.

The investigation found the contractor culpable for ignoring the safety codes that led to the collapse.

Memory Trick

'Culpable' contains 'culp,' the root of 'culprit' - if you're culpable, you're the culprit the blame belongs to.