Here's what rhymes with lullaby.
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 pry tri trie wry cy fy kai lai luy mei pri sy thei untie wai phi sty amebae stye lanai supply cry fly reply sky deny rely alkali defy fry sly nullify ratify belie pupae amoebae mollify ramify aquae ossify retry spry turfy ripply overbuy slier yuppify thereby imply nearby whereby clarify comply hereby modify multiply qualify classify verify certify glorify goodbye gratify purify underlie amplify pacify unify decry terrify edify overlie resupply bonsai deify preoccupy triply calcify horrify barfly mummify banzais syllabify justify satisfy butterfly notify alveoli magnify rectify samurai standby beautify falsify solidify termini typify codify crucify descry liquefy vilify acidify firefly stratify stultify ultrahigh blowfly emulsify misapply petrify reunify stupefy liquify overfly scarify scurfy versify prettify shanghai vitrify beatify drachmai dandify stimuli nuclei specify signify simplify testify diversify fortify dignify mortify oversupply personify dragonfly electrify mystify vivify cumuli declassify hyperbolae refortify speechify solemnify identify quantify disqualify objectify detoxify reclassify revivify dissatisfy gentrify exemplify intensify indemnify demystify transmogrify oversimplify misidentify