Asters rhymes with:
astor's, casters, disasters, headmasters, lemasters, master's, masters, masters', mcmasters, pastor's, pastors, pilasters, plasters
Asters sounds like:
actor's, actors, actors', actress, actress's, actresses, actuaries, actuators, agitators, ashtrays, asterisk, astor's, astorga, astra's, astros, austrasia, austria's, awestruck