2 syllables:
bello, bellow, belo, cello, celo, chelo, cielo, dello, delo, fellow, gello, gwelo, hell-o, hell o, jell-o, jello, jell o, kello, kellow, mello, mellow, melo, nello, pellow, quello, rello, sello, spello, stello, stelo, strehlow, strelow, tello, telloh, telo-, thelo, trello, vello, velo, yello, yellow, zello

3 syllables:
abuelo, agnello, aiello, anello, angello, anhelo, appello, aquello, arello, arguello, armello, atelo, augello, barbelo, barcelo, bargello, bedfellow, bilello, bonello, borello, borrello, botelho, botello, brunello, buentello, bunuelo, cabello, cabelo, caldrello, camello, cammello, cancello, canelo, capello, cappello, cardello, carello, carmelo, carrello, castello, castelo, cervello, chabelo, chipello, chrome yellow, class fellow, coachfellow, coelho, coello, colello, coltello, condello, corbello, corsello, costello, covello, crivello, cuello, curbelo, dacelo, dalbello, deangelo, debello, deep-yellow, demello, demelo, destello, dibello, dicello, dilello, duello, duelo, fratello, gamello, goodfellow, hail-fellow, hengelo, jagello, jagiello, karkelo, labello, lavello, livello, lobello, longfellow, lorello, maiello, mantello, marcello, marcelo, marshmallow, marshmello, marshmellow, martello, mindelo, modello, modelo, mondello, monello, mongiello, montello, morello, mugello, myelo, niello, novello, novelo, oddfellow, odd fellow, ombrello, otello, othello, pennello, pewfellow, pimelo, pirrello, pisello, playfellow, pomelo, porcello, prunello, pumelo, punchnello, puntello, pyelo, pyelo-, rastrello, ravello, ravelo, rebello, rebellow, rebelo, revello, robello, robelo, rosello, scarpello, schoolfellow, scielo, scrivello, servello, sgabello, sorbello, sordello, sotello, sotelo, spinello, stangelo, stringfellow, tangelo, tirello, torcello, torello, trapelo, uccello, unfellow, vangelo, verdelho, vermelho, vitello, vow-fellow, vuelo, workfellow, yoke-fellow

4 syllables:
808melo, albarello, amarelo, antonello, azzarello, boitumelo, botshabelo, brocatello, brownish-yellow, brownish yellow, campanello, campobello, cappiello, carabello, carangelo, caravello, cariello, chiarello, ciccarello, ciriello, civitello, colangelo, cornicello, coviello, crimson-yellow, daniello, darcangelo, diangelo, donatello, eurovelo, fariello, filippello, fiorello, frank costello, fratangelo, friggitello, funicello, greenish yellow, iannello, illangelo, lemon yellow, leporello, limoncello, mandocello, manganello, maranello, marinello, masiello, mastrangelo, matajuelo, mauriello, mazzatello, militello, montebello, monticello, muscarello, nardiello, orange yellow, orbetello, overmellow, paisiello, parrinello, pasquarello, perriello, pietrangelo, pinarello, pirandello, pisanello, piscitello, pocatello, ponticello, portabello, portobello, punchinello, raffaello, rakomelo, rick aiello, ritornello, riviello, rockafellow, romanello, ruggirello, sakartvelo, saltarello, santangelo, sulfur-yellow, sulphur-yellow, tamburello, teaching fellow, tomasello, tom morello, torsiello, tortorello, tuminello, tumminello, underfellow, vitiello, yokefellow, zamarello

5 syllables:
abbatiello, alberobello, cadmium yellow, canary-yellow, canary yellow, cartusciello, daniel goodfellow, danny aiello, femminiello, frangokastello, giovanniello, ianniello, joseph mazzello, manganiello, maria bello, masaniello, minichiello, pasquariello, paulo coelho, picariello, romaniello, santaniello, terciopelo, tortoriello

6 syllables:
annette funicello, camila cabello, joe manganiello, joseph james deangelo, robin diangelo, rubens barrichello, yasmani copello

7 syllables:
beverly d'angelo, henry wadsworth longfellow

2 syllables:
felloe

3 syllables:
bordello