Words That Rhyme With "Coliseum" :

2 syllables:

geum, Liam

3 syllables:

lyceum, museum, nymphaeum, odeum

4 syllables:

athenaeum, colosseum, ephebeum, gynaeceum, hypogeum, mausoleum, perineum, proctodaeum, proctodeum, propylaeum, stomodaeum, stomodeum