Commentaries rhymes with:
cemeteries, dignitaries, militaries, military's, monasteries, paramilitaries, proprietaries, secretaries, secretaries', secretary's, tributaries
Commentaries sounds like:
cantor's, cantors, cassandras, cemeteries, centaur's, centaurs, center's, centerre's, centers, centers', centres, centrex, centuries, century's, chandrika, chandross, cinders, cindric, comandeers, commander's, commanders, commentator's, commentators, commenters, commodore's, commuters, comtrex, condors, condracky, condracky's, contours, contras, contras', contreras, counters, countersue, countries, countries', country's