Cometary rhymes with:
cemetery, cemetery, dietary, dignitary, hereditary, interplanetary, military, monetary, nonmilitary, paramilitary, pituitary, planetary, proprietary, salutary, secretary, solitary, tributary, unsanitary
Cometary sounds like:
canadair, candor, cantara, canter, cantero, canterra, cantor, cantore, cassandra, cemetery, centaur, centauri, center, centerior, centerre, centre, centro, centuri, century, chandra, cinder, cointreau, comandeer, cometra, commandeer, commander, commentary, commentator, commenter, commodore, commuter, conder, condor, condra, condray, condrey, condry, contadora, contour, contra, contrary, contura, counter, country, cundari