Sergius rhymes with:
agregious, acrimonious, aeneas, aerolineas, agregious, alias, amphibious, antonius, aquarius, aqueous, bilious, bockius, bournias, brosious, celsius, claudius, coleus, commodious, contemporaneous, copious, courteous, curious, cyrenius, deleterious, delirious, demetrius, denarius, devious, dimitrius, dimitrius', dionysius, dubious, envious, erroneous, extraneous, fabrizius, fastidious, felonious, fresenius, furious, gaseous, glorious, gregarious, habeas, harmonious, hideous, hilarious, homogeneous, hovious, igneous, ignominious, illustrious, imperious, impervious, indubious, industrious, inglorious, injurious, insidious, instantaneous, invidious, laborious, lacksadaiscious, lascivious, lugubrious, luxurious, marius, masius, mauritius, melodious, meritorious, miscellaneous, mobius, morphonios, murias, mysterious, nefarious, notorious, nucleus, oblivious, obsequious, obvious, octavius, odious, odysseus, olympias, orpheus, palonius, pancreas, parsimonious, penurious, percutaneous, perseus, phineas, plinius, precarious, previous, punctilious, radius, sanctimonious, serious, simultaneous, spontaneous, spurious, stradivarius, studious, supercilious, tavoulareas, tedious, thaddeus, thelonius, unceremonious, various, vesuvius, vicarious, victorious, vilnius, vitreous, vitruvius, yglesias
Sergius sounds like:
sagers, sara's, saracco, sarage, sarage's, sarah's, sarawak, sargasso, sarge, sargis, sari's, sarich, saris, sarisi, sark, sarka, sarkis, saros, sarris, sars, sasser's, saucers, sauers, sawyer's, sawyers, sayers, sayres, scarce, scares, scars, scearce, scerzusky, scherer's, scherz, scheurich, schork, schorr's, schorsch, schrack, schrag, schrage, schreck, schreurs, schrick, schrock, schroeck, schwark, schwarz, schwarze, schweers, schweizerische, scissors, scorch, scorers, scores, scorsese, scorsese's, scorza, scourge, scourges, scours, scragg, screech, screeches, screws, scroggs, scrooge, scruggs, search, searches, searcy, sears, sears', sears's, secrecy, secures, seegars, seegers, seeker's, seekers, seers, segars, segers, seguros, seizures, sekerak, serco, seres, serex, serge, sergei, sergey, sergi, sergio, series, series', serious, seroka, serowski, serra's, serres, seskar's, sewerage, sewers, shahar's, shahrokh, shakers, share's, shares, shares', shark, sharkey, sharks, sharrock, shawcross, shear's, shearouse, shears, sherak, sherick, sherk, sherr's, sherri's, sherrick, sherry's, shiraishi, shirazi, shires, shirk, shirkey, shore's, shores, shorkey, showers, shrake, shreck, shriek, shrieks, shrock, shrug, shrugs, shryock, shugars, siekierski, sieracki, sierchio, sierra's, sierras, siers, siewiorek, siggers, sikorski, sikorsky, siracusa, siracuse, siragusa, sircy, sirek, sires, siris, sirk, sirko, sirois, siroky, sixers, skewers, skiers, skroch, skrocki, skurka, soares, soars, socarras, soccer's, sorce, sorcha, sorci, sores, sorg, sorge, sorice, sorkow, soroka, soros, soros's, sorrows, sorus, souers, source, source's, sources, sources', souris, sours, sowers, soyars, squares, squeakers, squiers, squires, squyres, srock, sroge, sroka, suarez, successors, sucharski, suckers, sucrose, sugar's, sugars, surace, sures, suresh, surge, surges, surowiec, surrogacy, swears, sweers, swirsky, swyers, syers, syracuse, syrek, syria's, szarek