Unusual rhymes with:
usual, usual, casual, usual, visual, actual, casual, heterosexual, homosexual, individual, mutual, perceptual, semiannual, sensual, spiritual, textual, usual, visual
Unusual sounds like:
unanimously, uncle, uncoil, uncool, uneasily, unequal, unglue, unicycle, uniquely, unocal, unseal, unsell, unshackle, unusually, unwisely