execute – Derives from Latin exsequi, “carry out, follow up; punish.” More…
gruelling – Comes from the verb gruel, “to exhaust, punish.” More…
punish – Derives from Latin punire, “punish,” which came from poena, “penalty, punishment.” More…
penal, punitive – Penal means “relating to punishment,” while punitive means “serving to punish.” More…