2 syllables:
blather, cather, dpsather, gather, lather, mather, prather, psather, rather, sather, slather, smather, wrather, bathe her

3 syllables:
foregather, forgather, ingather, lukather, regather, upgather, woolgather, sunbather

4 syllables:
steve lukather

2 syllables:
waiver, quaver, safer, nasser, chaffer, waver, lasher, placer, raver, thrasher, pacer, glazer, masher, acer, aver, raiser, gaffer, chaser, lazar, facer, smasher, blazer, brasier, passer, glacier, quasar, staffer, rasher, wafer, flavor, racer, bracer, shaver, ashur, favour, slaver, mazer, kaffir, azure, razor, saver, maser, kafir, tracer, favor, laser, savor, crasher, laver, flasher, claver, macer, caffer, masseur, sasser, yasser, blasier, flavour, frazier, savour

3 syllables:
brown thrasher, stern chaser, eraser, blue racer, engraver, cadaver, screen saver, wayfarer, appraiser, straight razor, disfavor, anaphor, gatecrasher, semaphore, backspacer, black racer, cockchafer, disfavour, face saver, flag-waver, gas maser, lefevre, life saver, new waver, palaver, papaver, red laver, skirt chaser, stock raiser, striped racer

4 syllables:
misbehaviour, atom smasher, alpine glacier, safety razor, curtain raiser, laissez passer, party favor, forward passer, genus passer, superslasher, genus acer, ink eraser, polar glacier, semiquaver, woman chaser

5 syllables:
antimacassar, ambulance chaser, blackboard eraser, demisemiquaver, electric razor, electric shaver, optical maser, pencil eraser, rubber eraser

6 syllables:
gamal abdel nasser, continental glacier

8 syllables:
hemidemisemiquaver