2 syllables:
brother, druther, fother, futher, mother, muther, nother, other, rather, smother, souther, suther, tother, uther, wuther, yother

3 syllables:
another, birthmother, earth-mother, eel-mother, foremother, godmother, half-brother, hoemother, housemother, step-mother, stepbrother, stepmother, through-other, wolfmother

4 syllables:
anthracothere, foster-brother, foster-mother, titanothere

2 syllables:
handler

3 syllables:
balancer, crackleware, canister, rattler, bachelor, matador, cannoneer, glandular, aquifer, lacklustre, lavender, prattler, manager, scapular, traveler, traveller, chancellor, vascular, fastener, samovar, handlebar, tanager, lancaster, ampullar, bannister, granular, sapsucker, atmosphere, amateur, papaver, landlubber, acinar, scavenger, hadrosaur, absconder, saddler, clawhammer, hackamore, annular, cavalier, avatar, salvador, wrangler, labrador, basilar, catheter, calendar, challenger, wagoner, canvasser, bandoleer, caliber, battledore, cannular, falconer, passenger, massacre, jacamar, malodor, man-of-war, palaver, gadgeteer, phalanger, blackamoor, lackluster, waggoner, tablature, baluster, zanzibar, angular, caliper, blastomere, blastosphere, albacore, janitor, stratosphere, straphanger, acular, adductor, agateware, battler, blasphemer, blastopore, blastular, cadastre, calender, camelhair, dabbler, gallagher, graniteware, handcolor, lapplander, paddler, saltshaker, vladimir

4 syllables:
spectacular, avascular, enamelware, peradventure, apatosaur, tyrannosaur, ambassador, rectangular, diameter, embassador, capacitor, vernacular, triangular, decameter, parameter, excalibur, milliammeter, examiner, gametophore, titanosaur, decaliter, pentangular, elastomer, dekameter, kala-azar, oracular, dekalitre, entablature, hexameter, hexangular, octameter, octangular, pentameter, zip-fastener

5 syllables:
enantiomer, acetabular, cross-examiner

6 syllables:
cardiovascular, semidiameter