Near rhymes:
* Slew (a past tense of "slay")
* Blue
* Sue
* Few
* Jew (use with caution as this word can be offensive)
Eye rhymes:
* Sulu (this word itself)
* Zulu (a South African ethnic group)
Other options:
* Woo (can be used in a playful way)
Important note: The best rhyming word will depend on the context and tone of your poem or writing.