2 syllables:
bhaskar, bosker, oscar, oskar

4 syllables:
ratatoskr

2 syllables:
handler, crofter, foster, prosper, roster, softer, zoster

3 syllables:
balancer, crackleware, canister, rattler, bachelor, matador, cannoneer, glandular, aquifer, lacklustre, lavender, prattler, manager, scapular, traveler, traveller, chancellor, vascular, fastener, samovar, handlebar, grandmother, lancaster, tanager, ampullar, bannister, granular, sapsucker, atmosphere, amateur, half-brother, 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

4 syllables:
spectacular, avascular, enamelware, peradventure, apatosaur, tyrannosaur, ambassador, rectangular, diameter, embassador, stage manager, great grandmother, snap fastener, san salvador, capacitor, lord chancellor, vernacular, slide fastener, triangular, decameter, parameter, spike lavender, el salvador, excalibur, milliammeter, knight bachelor, examiner, gametophore, titanosaur, sea lavender, decaliter, pentangular, elastomer, dekameter, kala-azar, vice chancellor, oracular, herpes zoster

5 syllables:
jewish calendar, city manager, enantiomer, acetabular, fellow traveler, hindu calendar, roman calendar

6 syllables:
julian calendar, vernier caliper, cardiovascular

7 syllables:
medical examiner, gregorian calendar