Mammoth Uncensored Word List:
205 words ending with er, 13 letters long

accelerometer accountholder affenpinscher alcoholometer antiforeigner attitudiniser attitudinizer backscratcher battlecruiser bibliographer biogeographer blameworthier blanketflower bloodthirster braillewriter breaststroker bridgebuilder bulletproofer campylobacter candlelighter candlesnuffer capellmeister cardiographer chalcographer characteriser characterizer chartographer choreographer christianiser christianizer chronographer chrysographer circumscriber clapperclawer clishmaclaver concertmaster conventioneer costardmonger cotransporter counterbidder counterfeiter counterplayer countersniper counterworker creaseproofer crossexaminer cryptographer cybersquatter decelerometer decisionmaker demineraliser demineralizer demultiplexer desulphuriser desulphurizer diaphanometer distinguisher doublespeaker ecclesiolater editorialiser editorializer electioneerer electroetcher electroplater fashionmonger fenestrometer fingerpainter floorpolisher fortunehunter fortuneteller furshlugginer gerrymanderer glossographer glyphographer glyptographer granddaughter greaseproofer groundbreaker groundskeeper haemodialyser haemodialyzer harbourmaster hemacytometer hemocytometer hyperproducer intelligencer interobserver interpilaster kapellmeister kettledrummer kindergartner knickerbocker knuckleballer knuckleduster leatherworker lexicographer macrocomputer maladminister microcomputer middlebreaker misadventurer mischiefmaker morphographer mouthbreather multiemployer musselcracker neanderthaler neurocomputer nonchurchgoer nonfertilizer nongeographer nongoalkeeper nonprogrammer nonsubscriber oceanographer oystercatcher paddlewheeler palaeographer panradiometer passionflower philosophiser philosophizer photocomposer photoengraver photofinisher physiographer phytoplankter pilferproofer pillowfighter pneumatometer potentiometer predeterminer premultiplier propagandiser propagandizer psychobabbler pyrheliometer quarterdecker quartermaster quoteworthier realpolitiker reconnoiterer reflectometer refractometer requisitioner reupholsterer rollercoaster saccharimeter saccharometer scandalmonger schoolteacher scintiscanner seismographer selenographer semiperimeter shadowgrapher shameworthier shockabsorber shrinkwrapper spiritualiser spiritualizer splashproofer stalagmometer stationmaster steeplechaser stereographer stratigrapher streetfighter strikebreaker stripsearcher submillimeter sunworshipper superachiever supercalender supercollider supercomputer superencipher superminister superthriller sympiesometer teleconverter thermographer thimblerigger thundershower tithegatherer tonguetwister tranquilliser tranquillizer trustworthier underachiever undergrounder understrapper urogravimeter videorecorder volumenometer wafflestomper warrantholder weathercaster weatherometer weightwatcher wheelbarrower whereinsoever whistleblower whithersoever zoogeographer