2 syllables:
achar, acker, aker, akkar, akker, akre, backer, back her, bakar, bakker, blacker, bracher, bracker, braquer, clacker, claquer, cracker, craquer, dacker, dakkar, drakkar, flacker, hacker, jacker, knacker, kracker, lacher, lacker, lacquer, laquer, macher, makar, nachor, nacker, packer, phacker, phracker, quacker, racker, sacar, sacchar, sachar, sacher, sacker, schacher, slacker, smacker, snacker, spacker, stacker, tacker, thacher, thacker, thakkar, tracker, trackir, vacher, wacker, whacker, yacker, yakare, yakker, zacher

3 syllables:
arnaquer, attacker, attaquer, backpacker, bullwhacker, bushwhacker, carjacker, cat cracker, corn-cracker, greenbacker, highjacker, hijacker, kobacker, linebacker, line backer, mantracker, meatpacker, nutcracker, outbacker, protracker, racetracker, ransacker, safe-cracker, safecracker, schabacker, shellcracker, skyjacker, souljacker, unpacker, vanacker, weed-whacker, weizsaecker, wisecracker, wit-cracker, woodcracker, ytcracker

4 syllables:
biohacker, cannon cracker, clark's nutcracker, firecracker, graham cracker, hydrocracker, illywhacker, milkytracker, neha kakkar, opentracker, oyster cracker, pokertracker, rickenbacker, soda cracker, the nutcracker

5 syllables:
common nutcracker

6 syllables:
catalytic cracker

2 syllables:
adder, attar, bader, bagger, batter, blabber, bladder, catarrh, chatter, clabber, clapper, clatter, crapper, dagger, dapper, faqir, flapper, flatter, grabber, hatter, jabber, jaeger, jagger, ladder, latter, madder, mapper, mater, matter, nagger, natter, pabir, patter, platter, rapper, ratter, sapper, satyr, scatter, scrapper, shatter, slabber, smatter, snapper, spatter, splatter, stabber, stagger, strapper, swagger, tatar, tatter, trapper, wrapper

3 syllables:
air bladder, backscatter, back matter, bespatter, death adder, dust wrapper, end matter, fish ladder, front matter, gray matter, gray snapper, grey matter, hog snapper, jack ladder, milk adder, no matter, puff adder, puff batter, red snapper, rope ladder, sea ladder, step ladder, swim bladder, the matter, thigh-slapper, vannatter, waste matter, white madder, white matter, wild madder

4 syllables:
banded adder, checkered adder, cloak-and-dagger, double dagger, fecal matter, flaccid bladder, fritter batter, jacob's ladder, mangrove snapper, mongol tatar, monkey ladder, mutton snapper, pancake batter, pilot ladder, pitter-patter, scaling ladder, spanish dagger, spin the platter, spirit rapper, state of matter, subject matter, turko-tatar, whippersnapper, written matter

5 syllables:
aerial ladder, crux of the matter, extension ladder, indian madder, textual matter

6 syllables:
alligator snapper, northern jacob's ladder, pictorial matter, urinary bladder

7 syllables:
accommodation ladder, conservation of matter

9 syllables:
law of conservation of matter