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