12 letter word ending in er?

commissioner, practitioner, schoolmaster, manufacturer, extinguisher, photographer, galvanometer, schopenhauer, waldengarver, manslaughter, staudenmaier, stepdaughter, stenographer, cheesemonger, wonderworker, experimenter, confectioner, cartographer, eavesdropper, sharpshooter, orangeflower, sledgehammer, derwentwater, melanogaster, rosenkreuzer, hydrographer, amphitheater, rottenhammer, aggerawayter, remembrancer, housebreaker, maculiventer, cornchandler, brickfielder, watercarrier, heartbreaker, wunderkinder, guadalquiver, swashbuckler, frauenzimmer, eichelberger, quakerlyster, transplanter, globetrotter, doppelganger, midwesterner, streetwalker, strathpeffer, volksbuecher, costermonger, starkweather, complimenter, huggermugger, weightometer, otherwhither, phrasemonger, redemptioner, disorganizer, netherlander, prussianizer, orthographer, rediscoverer, paleographer, threequarter, septembrizer, whencesoever, klipspringer, retrocoupler, formulariser, microammeter, formularizer, democratizer, cabinetmaker, shortchanger, acclimatiser, windesheimer, circulariser, acclimatizer, overachiever, vizardmonger, pinfeatherer, circularizer, antioxidizer, radiographer, subpurchaser, throughother, micrographer, electropower, nonpassenger, misworshiper, horsebreaker, magnetometer, fleeceflower, puppetmaster, anesthetizer, swordslipper, familiariser, misconceiver, underwatcher, familiarizer, hairsplitter, shapeshifter, animadverter, gallowsmaker, misconstruer, supercharger, saramaccaner, diffusimeter, discharacter, viticulturer, sceneshifter, overregister, herrenvolker, donnerwetter, resolutioner, rijksdaalder, underspinner, switchbacker, protonotater, everywhither, cordouannier, parallelizer, campylometer, archconsoler, nonsupporter, buttercooler, dimberdamber, holidaymaker, teleprompter, metageometer, faithbreaker, harquebusier, revelationer, middlebuster, lithoglypher, discommender, shellcracker, percussioner, katzenjammer, aplanobacter, stringholder, achtelthaler, wanderluster, clairseacher, garlicmonger, latinitaster, wonderfuller, mythologizer, counteracter, spiritmonger, tollgatherer, disastimeter, steinamanger, agriculturer, cheeseflower, garmentmaker, mechanolater, evaporometer, pretermitter, archminister, monkeyflower, organosilver, vagabondager, blanchimeter, ichthyologer, cankerflower, nackenheimer, semifrontier, brightdayler, demicylinder, thereinafter, mouthbrooder, electrotyper, berhampooter, helmetflower, supplementer, frigorimeter, cattleraider, necrographer, chrysogaster, transalpiner, interpolater, spiderhunter, nettlemonger, vagabondizer, versifiaster, archoverseer, arithmometer, peacebreaker, counterborer, relinquisher, countercheer, arteriometer, dungdevourer, moneygrubber, whatsomdever, bridechamber, trocheameter, circumcenter, headshrinker