2 syllables:
-meter, -metre, -seater, beater, beat her, beter, bleater, cheater, cretor, deater, deeter, detre, dieter, eater, eat her, feater, fetor, fleeter, foetor, freeter, geeter, greeter, greet her, heater, heeter, jeeter, jeter, keator, keeter, keiter, keytar, liter, litre, meeter, meet her, meter, metre, mitter, peeter, peter, pieter, pleater, praeter, praeter-, praetor, preter, preter-, pretor, rieter, saeter, schleeter, seater, sheeter, skeeter, sleeter, sliter, spitir, streater, streator, streeter, strieter, sweeter, teater, teeter, teter, treater, treat her, tweeter, vietor, yeater, zetor

3 syllables:
aliter, all-seater, ammeter, ant-eater, anteater, arreter, bee-eater, beefeater, bee eater, bhangmeter, blue peter, browbeater, champetre, coal-meter, competere, completar, completer, complete her, crabeater, croweater, defeater, demeter, demetre, depleter, discreeter, drumbeater, e-meter, egg-beater, eggbeater, elfmeter, entreater, figeater, fire-eater, fisheater, fluxmeter, gas heater, gas meter, gnateater, gold-beater, goldbeater, leadbeater, light meter, luxmeter, maltreater, man-eater, maneater, meateater, molitor, oil heater, oometer, physeter, preheater, propraetor, propretor, pyoureter, rainmeter, receiptor, reheater, repeater, retreater, rug beater, saint peter, saltpetre, seedeater, sin-eater, snow eater, space heater, square meter, st peter, tenthmetre, toad-eater, toadeater, torquemeter, two-seater, ureter, vanmeter, vanmetre, wattmeter, wife-beater, windcheater, world-beater, worldbeater

4 syllables:
aerometer, amperemeter, antimeter, attolitre, attometre, avometer, barkometer, bathymeter, bolometer, brontometer, calcimeter, campimeter, carpet beater, centiliter, centilitre, centimeter, centimetre, chlorometer, clinometer, common meter, coulometer, cryometer, cubic meter, cyclometer, dasymeter, decametre, deciliter, decilitre, decimeter, decimetre, decremeter, dekametre, densimeter, diametre, dosemeter, ergometer, exalitre, exametre, expositor, fathometer, femtometre, fluorimeter, focimeter, gasometer, gigalitre, gigameter, gigametre, gravimeter, great anteater, halometer, hannah jeter, hazemeter, hectolitre, hectometre, holometer, honey-eater, honeyeater, honey eater, hypermeter, joulemeter, kilolitre, kilometer, kilometre, klinometer, konimeter, labimeter, lanameter, logometer, lotos-eater, lotus-eater, lotus eater, macrometer, manometer, megameter, megametre, mekometer, mentimeter, micrometre, mililiter, milliammeter, milliliter, millilitre, millimeter, millimetre, milometer, multimeter, nanolitre, nanometer, nanometre, neotheater, newton-meter, newton-metre, nilometer, nonsecretor, oenometer, ohmmeter, overeater, oximeter, pachymeter, pantometer, passometer, pelvimeter, petalitre, petameter, petametre, phall-o-meter, picolitre, picometre, planimeter, planometer, platymeter, plessimeter, pleximeter, postage meter, pulsimeter, pulsometer, qualimeter, salimeter, salometer, sillometer, similiter, solar heater, sonometer, stadimeter, stenometer, sulfameter, superheater, tachymeter, tasimeter, taximeter, telemeter, tensimeter, teralitre, terameter, terametre, tetrameter, tonometer, trick-or-treater, turgometer, vacuometer, vinometer, voltameter, water heater, water meter, yoctolitre, yoctometre, yottalitre, yottameter, yottametre, zentimeter, zeptolitre, zeptometre, zettalitre, zettameter, zettametre

5 syllables:
acetimeter, acidimeter, actinometer, alcalimeter, algesimeter, anthropometer, auxanometer, banded anteater, cephalometer, co-oximeter, coercimeter, cyanometer, ductilimeter, elastometer, electric heater, exposure meter, extensimeter, galvanometer, geodimeter, giant anteater, globulimeter, gram-centimeter, gravity meter, indigometer, intoximeter, kerosene heater, kilogram-meter, kilogrammetre, lesser anteater, microammeter, myrialitre, myriameter, myriametre, new world anteater, opacimeter, opium-eater, penetrameter, photogrammeter, pluviameter, pneumonometer, profilometer, pyranometer, scintillometer, silky anteater, spiny anteater, stereometer, submillimeter, transmissometer, turbidimeter, ureameter, velocimeter, viscosimeter

6 syllables:
albuminimeter, alcoholometer, baromacrometer, carmelita jeter, cubic centimeter, cubic millimeter, dynactinometer, haematinometer, haemomanometer, lactodensimeter, microbolometer, micromillimeter, micromillimetre, spectrofluorimeter, sphygmomanometer, thermogravimeter

7 syllables:
psychogalvanometer

2 syllables:
seeder, detour, bleeder, chequer, beeper, cedar, meager, meagre, reaper, keeper, eager, breeder, beaker, feeder, squeaker, streaker, peeper, creeper, seeker, weeper, sleeper, speeder, leader, sneaker, t-bar, speaker, reader, wheatear, eagre, sweeper, cheaper, deeper, fieger, igor, regur, strieker, veadar, vidor, weaker

3 syllables:
grim reaper, lip reader, beleaguer, loss leader, white cedar, red cedar, lay reader, besieger, floor leader, mind reader, big leaguer, ground cedar, mouthbreeder, self-feeder, self-seeker, snake feeder, stock breeder, street sweeper, strike leader, toreador, true cedar, uigur, uneager, woodcreeper, zoo keeper

4 syllables:
carpet sweeper, incense cedar, spanish cedar, atlas cedar, brothel keeper, business leader, canoe cedar, chimneysweeper, civic leader, civil leader, coast white cedar, honeycreeper, japan cedar, labor leader, lawson's cedar, lighthouse keeper, little leaguer, major leaguer, market keeper, minor leaguer, pencil cedar, placeseeker, pleasure seeker, public speaker, saloon keeper, station keeper, stinking cedar, yellow cedar

5 syllables:
eastern red cedar, western red cedar, japanese cedar, port orford cedar, alaska cedar, bermuda cedar, chilean cedar, civil rights leader, diary keeper, intercom speaker, national leader, northern white cedar, oregon cedar, philippine cedar, religious leader, southern red cedar, southern white cedar

6 syllables:
majority leader, minority leader, atlantic white cedar, east african cedar, himalayan cedar, military leader, political leader, spiritual leader

7 syllables:
valedictory speaker