2 syllables:
aro, baro, barro, caro, carro, charo, charro, claro, farro, garro, haro, karow, maro, marro, morrow, naro, paro, parro, pharo, sarro, sbarro, searo, skaro, sorrow, sparo, starro, storrow, tarro, varo, varro, yarrow, zarro

3 syllables:
albaro, alfaro, alvaro, amaro, amparo, aparo, arcaro, armaro, asaro, avaro, azzaro, barbaro, bavaro, bizarro, bizzaro, blepharo, bucaro, cafaro, caparro, capraro, cassaro, catarro, cattaro, cesaro, cestaro, chaparro, chiaro, chicharro, cigarro, coccaro, coffaro, comaro, cordaro, corsaro, cuccaro, dasaro, decaro, denaro, dodaro, egaro, favaro, ferarro, ferraro, funaro, furfaro, fusaro, gasbarro, gasparro, genaro, gennaro, gibaro, guacharo, guitarro, hamtaro, hanaro, hellaro, icaro, ignaro, imaro, jibaro, jivaro, k.maro, keitaro, kentaro, kohtaro, kotaro, lazaro, lazzaro, lesharo, litaro, lofaro, manjaro, mascaro, massaro, mataro, moonsorrow, navarro, nazzaro, notaro, pajaro, panaro, passaro, patzcuaro, pesaro, pissarro, pizarro, pizzaro, porcaro, recaro, rintaro, ryutaro, sahuaro, scalfaro, scolaro, seek-sorrow, setaro, shintaro, sodaro, spadaro, spataro, stagnaro, tafaro, tammaro, tartaro, todaro, tomaro, totaro, tsintskaro, ungaro, vaccaro, varvaro, zaccaro, zingaro, zuccaro

4 syllables:
bodo-garo, bordonaro, calderaro, campanaro, cannistraro, cannizzaro, carbonaro, catanzaro, cavagnaro, cavallaro, chanhudaro, degennaro, digennaro, famularo, manganaro, marinaro, mogavaro, molinaro, momotaro, montanaro, mortellaro, neevevaro, overmorrow, oversorrow, pagliaro, paninaro, pecoraro, pignataro, posteraro, quartararo, queretaro, shippeitaro, tig notaro, tupamaro, utamaro, yoko taro

5 syllables:
conigliaro, decristofaro, finocchiaro, jair bolsonaro, kilimanjaro, lakhan-jo-daro, mohenjo-daro, mohenjodaro, negroamaro

6 syllables:
chevrolet camaro, mount kilimanjaro

2 syllables:
arrow, barrow, beroe, biro, borough, borrow, bureau, burro, burrow, cairo, darrow, euro, faro, farrow, furrow, gyro, harrow, hero, marrow, miro, narrow, pharaoh, pirro, sparrow, spiro, taro, thorough, zero

3 syllables:
bolero, bone marrow, broad arrow, cruzeiro, deniro, dinero, disc harrow, disk harrow, field sparrow, hedge sparrow, house sparrow, janeiro, mindoro, passero, restharrow, saguaro, sapporo, shapiro, sokoro, sombrero, song sparrow, straight arrow, swamp sparrow, tomorrow, torero, tree sparrow, true sparrow, vaquero

4 syllables:
aleph-zero, antihero, autogiro, autogyro, bow and arrow, cape passero, census bureau, chipping sparrow, credit bureau, english sparrow, giant taro, golden yarrow, java sparrow, new world sparrow, pocket borough, poroporo, rabbit burrow, rotten borough, service bureau, straight and narrow, vesper sparrow, weather bureau

5 syllables:
absolute zero, banderillero, chiaroscuro, vegetable marrow

6 syllables:
rio de janeiro

7 syllables:
california romero

8 syllables:
italian vegetable marrow