Antonius rhymes with:
acrimonious, erroneous, felonious, harmonious, palonius, parsimonious, sanctimonious, thelonius, unceremonious, acrimonious, aeneas, aerolineas, bournias, contemporaneous, cyrenius, erroneous, extraneous, felonious, fresenius, harmonious, homogeneous, igneous, ignominious, instantaneous, miscellaneous, morphonios, palonius, parsimonious, percutaneous, phineas, plinius, sanctimonious, simultaneous, spontaneous, thelonius, unceremonious, vilnius
Antonius sounds like:
amending, ammunitions, amounting, anding, animations, annotating, annotations, antenna's, antennas, antenucci, anthems, anthony's, antitank, antonacci, antonini's, antonio's, antonios, antoniu's, antonucci, antunes, antunez, anything, anything's, anytime's