punitive (adj.)

• correctional
• corrective
• disciplinary
• grueling
• implacable
• irreconcilable
• penal
• punishing
• punitory
• rancorous
• reciprocal
• reparative
• retaliative
• retaliatory
• retributive
• retributory
• revengeful
• unappeasable
• vengeful
• vindicatory
• vindictive