1 syllable:
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, 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, boals, boles, bolles, bolls, bolz, bowles, bowls, coal's, coals, cole's, coles, colles, dholes, dole's, doles, drolls, foale's, foals, folz, goals, goelz, golz, holes, holz, joles, knoles, knoll's, knolls, knowles, kohl's, kohls, moles, noles, nolls, oles, poales, pohl's, poles, poll's, polls, pols, proles, quolls, roles, roll's, rolls, rowles, scholes, scholz, scholze, scoles, scrolls, seoul's, shoals, sholes, soles, souls, sowles, sproles, stoles, stolz, stolze, strolls, tholes, toles, tolles, tolls, troels, troll's, trolls, voelz, voles, volz, wholes, wolz

2 syllables:
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, anoles, arboles, atolls, azoles, bankrolls, beanpoles, bedrolls, blowholes, boreholes, brignoles, bubolz, bungholes, buttholes, cajoles, charcoals, chuckholes, condoles, consoles, control's, controls, creoles, dipoles, enrolls, extolls, extols, eyeholes, fishbowls, flagpoles, foxholes, frijoles, gambols, gaols, grifols, hawseholes, hellholes, indoles, keyholes, knotholes, krumholz, loopholes, lugholes, manholes, maypoles, nicole's, nineholes, outsoles, paroles, patrol's, patrols, payrolls, peepholes, petroles, pinholes, pistoles, plimsoles, portholes, postholes, potholes, pyrroles, ratholes, redpolls, resoles, rissoles, sinkholes, soboles, spyholes, steamrolls, systoles, tadpoles, unrolls, washbowls, windholz

3 syllables:
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, unocal's, volleyballs, waterfalls, wherewithals, wonderfalls, amphiboles, anisoles, areoles, banderoles, barcaroles, barcarolles, bracteoles, bronchioles, buttonholes, calcicoles, camisoles, caprioles, caracoles, carioles, carrioles, casseroles, centrioles, creosols, cubbyholes, dead sea scrolls, decontrols, folderols, fumaroles, girandoles, girasoles, glorioles, metropol's, millimoles, monopoles, orioles, orioles', ostioles, parasols, petioles, pigeonholes, polyols, porquerolles, pratincoles, propanols, richard coles, rigmaroles, seminoles, superbowl's, superbowls, thiazoles, triazoles, waterholes

4 syllables:
gravity falls, idaho-falls, neanderthals, niagara falls, paleosols, rutherford falls, arterioles, extrasystoles, imidazoles, phytosterols, profiteroles, tetrapyrroles, the elder scrolls

5 syllables:
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, camilla parker bowles

9 syllables:
sustainable development goals