decision-maker/policymaker/peacemaker etc | meaning of decision-maker/policymaker/peacemaker etc in Longman Dictionary of Contemporary English | LDOCE

From Longman Dictionary of Contemporary Englishdecision-maker/policymaker/peacemaker etcdecision-maker/policymaker/peacemaker etcGOOD ATsomeone who does something or makes something happen  Who’s the decision-maker in this department?  health care administrators and policymakers → troublemaker, holidaymaker → maker