Here's what rhymes with nullibi.
by die buy tie bi bye dye pi pie thai dei ty alibi tai my high why apply dry lie thy try y guy occupy vi hi shy sigh chi fi hy nigh spy thigh vie ly ply psi quae rye wir awry hai lye mai muy nai nullify pry tri trie wry cy fy kai lai lullaby luy mei pri sy thei untie wai mollify phi sty amebae stye lanai supply cry fly reply sky deny nearby rely modify multiply alkali defy fry sly belie pupae amoebae aquae ossify retry spry turfy mummify ripply overbuy slier yuppify thereby imply whereby comply hereby qualify verify certify goodbye notify underlie amplify magnify pacify ratify unify decry terrify edify overlie ramify resupply bonsai deify triply calcify emulsify horrify misapply barfly banzais syllabify justify satisfy clarify nuclei classify simplify butterfly glorify gratify purify alveoli rectify samurai standby beautify falsify solidify termini typify codify crucify descry liquefy mortify vilify acidify firefly mystify preoccupy stultify ultrahigh blowfly petrify reunify stupefy liquify overfly scarify scurfy versify prettify shanghai vitrify beatify drachmai dandify stimuli specify signify testify diversify fortify dignify oversupply personify stratify vivify hyperbolae gentrify refortify speechify solemnify identify exemplify intensify quantify disqualify indemnify objectify demystify detoxify dragonfly electrify revivify cumuli dissatisfy declassify reclassify transmogrify oversimplify misidentify