watchdog Synonyms

guarddog pinscher watchman watch warder warden trustee supervisor superintendent steward spial sentry sentinel scrutineer coastguard sled dog supervisory body cleaning person swamper maintenance person housesitter ombudsman invigilator bird dog caretaker guardian angel guard dog attack dog sheep dog regulator ranger custodian curator cop conservator concierge claviger champion cerberus castellan bodyguard bandog auditor attendant defender escort protector preserver patrol overseer