Here's what rhymes with fiifth.
fifth Words that almost rhyme with fiifth
riffs skiffs sniffs whiffs stiffs gives lives myths cliffs sieves smiths scythes writhes clefs withes forgives mastiffs relives hieroglyphs blacksmiths goldsmiths monoliths silversmiths myth width filth pith smith scythe writhed writhe sixth plinth therewith herewith hyacinth forthwith labyrinth wherewith monolith silversmith