What is a -maker?
-maker combines "make" (to create, produce) with "-er" (agent) to name someone who makes or generates something habitually or professionally:
Cultural and artistic creators:
• filmmaker = one who makes films
• glassmaker = one who makes glass
• cabinetmaker = a craftsman who makes fine furniture
• clockmaker = one who makes and repairs clocks
• dressmaker = one who makes clothes, especially for women
Social or relational roles:
• peacemaker = one who works to create peace
• troublemaker = one who habitually causes trouble
• matchmaker = one who arranges relationships between people
• dealmaker = a skilled negotiator who closes agreements
• policymaker = one who designs and implements public policy
Peacemaker and troublemaker: the opposing pair
"Peacemaker" and "troublemaker" form one of the most expressive semantic pairs with -maker. Their opposition is perfect.
"Peacemaker" appears in religious contexts ("Blessed are the peacemakers"), diplomatic ones ("serve as a peacemaker"), and social ones ("she was always the peacemaker in family arguments").
"Troublemaker" is more informal but very frequent: "a born troublemaker," "the troublemakers in the class," "he was branded a troublemaker." It describes someone who systematically generates conflict or disorder.
Policymaker and dealmaker in formal texts
"Policymaker" is indispensable in political science, economics, and journalism: "policymakers should consider...," "the decisions of policymakers," "senior policymakers."
"Dealmaker" (a skilled negotiator who closes agreements) is common in economic and business journalism: "a skilled dealmaker," "his reputation as a dealmaker," "the dealmaker behind the merger."
Both words signal advanced academic and journalistic vocabulary.