Words That Rhyme With "Union" :
2 syllables:
banian, banyan, bunion, Bunyan, canyon, fanion, grunion, Kenyan, minion, onion, pinion, pinon, ronyon, Runyon, trunnion, wanion
3 syllables:
champignon, communion, companion, disunion, dominion, jejunum, nonunion, opinion, reunion, Virginian
4 syllables:
antiunion, Catalonian, Macedonian, postcommunion