1 syllable:
-ales, al's, als, gals, hal's, mal's, pal's, pals, pfalz, sal's, shall's, all's, alls, baals, bahls, ball's, balls, balz, bawls, brawls, call's, calls, calze, caules, cauls, crawls, dahl's, dahls, dj qualls, doll's, dolls, dols, drawls, faal's, fall's, falles, falls, folles, galls, gauls, hall's, halls, hauls, kraals, lalls, mall's, malls, mauls, molls, myalls, nalls, palls, paul's, paules, pauls, pawls, poehl's, qualls, quals, ralls, rawles, rawls, salls, salz, sauls, schmalz, scrawls, shawls, smalls, spalls, sprawls, squalls, srawls, stalls, thralls, trawls, trollz, vaals, valls, waals, wall's, walles, walls, walz, wauls, yawls

2 syllables:
aircal's, canal's, canals, chorales, corrals, decals, locales, miscalls, morales, pascals, vitales, amal's, amdahl's, appalls, armholes, baseball's, baseballs, beachballs, befalls, birdcalls, blackballs, bookstalls, bradawls, bugyals, cabrall's, candaules, carryalls, casals, catcalls, consols, cornballs, cure-alls, dancehalls, deadfalls, degaulle's, deval's, downfalls, enthralls, enthrals, eyeballs, fastballs, fireballs, football's, footballs, footfalls, footwalls, forestalls, gadwalls, ghazals, gleichfalls, glycols, goofballs, great falls, guildhalls, hairballs, handballs, hardballs, headstalls, highballs, icefalls, ingalls, installs, jamal's, keelhauls, landfalls, lowballs, madballs, marshalls, mccall's, mcfalls, mcgols, meatballs, mothballs, newhall's, nidal's, no-balls, nutgalls, oddballs, ozal's, pinballs, pitfalls, pratfalls, pub-crawls, puffballs, rainfalls, recalls, riyals, rockfalls, ryals, sabol's, screwballs, seawalls, shortfalls, sidewalls, sioux falls, slimeballs, snowball's, snowballs, softballs, spaceballs, speedballs, spitball's, spitballs, starmalls, stonewalls, trackballs, twin falls, warhol's, whitehall's, whitewalls, windfalls, wormholes

3 syllables:
chaparrals, fetiales, gentianales, kaiserpfalz, miles morales, mucorales, musicales, rationales, rheinland-pfalz, volvocales, aerosols, alcohols, andernfalls, angel falls, apiales, badesalz, base on balls, basketball's, basketballs, bittersalz, buckyballs, butterballs, butterschmalz, cannonballs, colemanballs, coveralls, disenthralls, disenthrals, ebenfalls, entisols, goldenthal's, goo goo dolls, horseshoe falls, hydrosols, kirtilals, klamath falls, know-it-alls, knuckleballs, labials, metaballs, montreal's, overalls, overcalls, overhauls, protocols, reinstalls, robocalls, sinqua walls, sohodolls, starting stalls, thiokol's, ultisols, uninstalls, volleyballs, waterfalls, wherewithals, wonderfalls

4 syllables:
commerciale's, evo morales, lechanorales, gravity falls, idaho-falls, neanderthals, niagara falls, paleosols, rutherford falls

5 syllables:
aphyllophorales, providenciales, aerospatiale's, american falls, canadian falls, list of whaling walls, meridionals, the pussycat dolls, victoria falls, yosemite falls

6 syllables:
paulo afonso falls, spaghetti and meatballs